--- _id: '47996' abstract: - lang: eng text: Specific heat capacity measurements by differential scanning calorimetry (DSC) of single crystals of solid solutions of LiNbO3 and LiTaO3 are reported and compared with corresponding ab initio calculations, with the aim to investigate the variation of the ferroelectric Curie temperature as a function of composition. For this purpose, single crystals of these solid solutions were grown with Czochralski pulling along the c-axis. Elemental composition of Nb and Ta was investigated using XRF analysis, and small samples with homogeneous and well known composition were used for the DSC measurements. We observed that the ferroelectric Curie temperature decreases linearly with increasing Ta concentration in the LiNb1−x Tax O3 solid solution crystals. Furthermore, the ferroelectric transition width of a mixed crystal appears to be smaller, as compared to pure LiTaO3. article_type: original author: - first_name: Umar full_name: Bashir, Umar last_name: Bashir - first_name: Klaus full_name: Böttcher, Klaus last_name: Böttcher - first_name: Detlef full_name: Klimm, Detlef last_name: Klimm - first_name: Steffen full_name: Ganschow, Steffen last_name: Ganschow - first_name: Felix full_name: Bernhardt, Felix last_name: Bernhardt - first_name: Simone full_name: Sanna, Simone last_name: Sanna - first_name: Michael full_name: Rüsing, Michael id: '22501' last_name: Rüsing orcid: 0000-0003-4682-4577 - first_name: Lukas M. full_name: Eng, Lukas M. last_name: Eng - first_name: Matthias full_name: Bickermann, Matthias last_name: Bickermann citation: ama: 'Bashir U, Böttcher K, Klimm D, et al. Solid solutions of lithium niobate and lithium tantalate: crystal growth and the ferroelectric transition. Ferroelectrics. 2023;613(1):250-262. doi:10.1080/00150193.2023.2189842' apa: 'Bashir, U., Böttcher, K., Klimm, D., Ganschow, S., Bernhardt, F., Sanna, S., Rüsing, M., Eng, L. M., & Bickermann, M. (2023). Solid solutions of lithium niobate and lithium tantalate: crystal growth and the ferroelectric transition. Ferroelectrics, 613(1), 250–262. https://doi.org/10.1080/00150193.2023.2189842' bibtex: '@article{Bashir_Böttcher_Klimm_Ganschow_Bernhardt_Sanna_Rüsing_Eng_Bickermann_2023, title={Solid solutions of lithium niobate and lithium tantalate: crystal growth and the ferroelectric transition}, volume={613}, DOI={10.1080/00150193.2023.2189842}, number={1}, journal={Ferroelectrics}, publisher={Informa UK Limited}, author={Bashir, Umar and Böttcher, Klaus and Klimm, Detlef and Ganschow, Steffen and Bernhardt, Felix and Sanna, Simone and Rüsing, Michael and Eng, Lukas M. and Bickermann, Matthias}, year={2023}, pages={250–262} }' chicago: 'Bashir, Umar, Klaus Böttcher, Detlef Klimm, Steffen Ganschow, Felix Bernhardt, Simone Sanna, Michael Rüsing, Lukas M. Eng, and Matthias Bickermann. “Solid Solutions of Lithium Niobate and Lithium Tantalate: Crystal Growth and the Ferroelectric Transition.” Ferroelectrics 613, no. 1 (2023): 250–62. https://doi.org/10.1080/00150193.2023.2189842.' ieee: 'U. Bashir et al., “Solid solutions of lithium niobate and lithium tantalate: crystal growth and the ferroelectric transition,” Ferroelectrics, vol. 613, no. 1, pp. 250–262, 2023, doi: 10.1080/00150193.2023.2189842.' mla: 'Bashir, Umar, et al. “Solid Solutions of Lithium Niobate and Lithium Tantalate: Crystal Growth and the Ferroelectric Transition.” Ferroelectrics, vol. 613, no. 1, Informa UK Limited, 2023, pp. 250–62, doi:10.1080/00150193.2023.2189842.' short: U. Bashir, K. Böttcher, D. Klimm, S. Ganschow, F. Bernhardt, S. Sanna, M. Rüsing, L.M. Eng, M. Bickermann, Ferroelectrics 613 (2023) 250–262. date_created: 2023-10-11T09:10:08Z date_updated: 2023-10-11T09:10:36Z doi: 10.1080/00150193.2023.2189842 extern: '1' intvolume: ' 613' issue: '1' keyword: - Condensed Matter Physics - Electronic - Optical and Magnetic Materials language: - iso: eng page: 250-262 publication: Ferroelectrics publication_identifier: issn: - 0015-0193 - 1563-5112 publication_status: published publisher: Informa UK Limited quality_controlled: '1' status: public title: 'Solid solutions of lithium niobate and lithium tantalate: crystal growth and the ferroelectric transition' type: journal_article user_id: '22501' volume: 613 year: '2023' ... --- _id: '13519' author: - first_name: A. full_name: Riefer, A. last_name: Riefer - first_name: S. full_name: Sanna, S. last_name: Sanna - first_name: Wolf Gero full_name: Schmidt, Wolf Gero last_name: Schmidt citation: ama: Riefer A, Sanna S, Schmidt WG. LiNb1-xTaxO3Electronic Structure and Optical Response fromFirst-PrinciplesCalculations. Ferroelectrics. 2013;447:78-85. doi:10.1080/00150193.2013.821904 apa: Riefer, A., Sanna, S., & Schmidt, W. G. (2013). LiNb1-xTaxO3Electronic Structure and Optical Response fromFirst-PrinciplesCalculations. Ferroelectrics, 447, 78–85. https://doi.org/10.1080/00150193.2013.821904 bibtex: '@article{Riefer_Sanna_Schmidt_2013, title={LiNb1-xTaxO3Electronic Structure and Optical Response fromFirst-PrinciplesCalculations}, volume={447}, DOI={10.1080/00150193.2013.821904}, journal={Ferroelectrics}, author={Riefer, A. and Sanna, S. and Schmidt, Wolf Gero}, year={2013}, pages={78–85} }' chicago: 'Riefer, A., S. Sanna, and Wolf Gero Schmidt. “LiNb1-XTaxO3Electronic Structure and Optical Response FromFirst-PrinciplesCalculations.” Ferroelectrics 447 (2013): 78–85. https://doi.org/10.1080/00150193.2013.821904.' ieee: A. Riefer, S. Sanna, and W. G. Schmidt, “LiNb1-xTaxO3Electronic Structure and Optical Response fromFirst-PrinciplesCalculations,” Ferroelectrics, vol. 447, pp. 78–85, 2013. mla: Riefer, A., et al. “LiNb1-XTaxO3Electronic Structure and Optical Response FromFirst-PrinciplesCalculations.” Ferroelectrics, vol. 447, 2013, pp. 78–85, doi:10.1080/00150193.2013.821904. short: A. Riefer, S. Sanna, W.G. Schmidt, Ferroelectrics 447 (2013) 78–85. date_created: 2019-09-30T13:49:40Z date_updated: 2022-01-06T06:51:37Z department: - _id: '15' - _id: '170' - _id: '295' doi: 10.1080/00150193.2013.821904 intvolume: ' 447' language: - iso: eng page: 78-85 project: - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing publication: Ferroelectrics publication_identifier: issn: - 0015-0193 - 1563-5112 publication_status: published status: public title: LiNb1-xTaxO3Electronic Structure and Optical Response fromFirst-PrinciplesCalculations type: journal_article user_id: '16199' volume: 447 year: '2013' ... --- _id: '13819' author: - first_name: A. full_name: Riefer, A. last_name: Riefer - first_name: S. full_name: Sanna, S. last_name: Sanna - first_name: Wolf Gero full_name: Schmidt, Wolf Gero id: '468' last_name: Schmidt orcid: 0000-0002-2717-5076 citation: ama: Riefer A, Sanna S, Schmidt WG. LiNb1-xTaxO3Electronic Structure and Optical Response fromFirst-PrinciplesCalculations. Ferroelectrics. 2013;447:78-85. doi:10.1080/00150193.2013.821904 apa: Riefer, A., Sanna, S., & Schmidt, W. G. (2013). LiNb1-xTaxO3Electronic Structure and Optical Response fromFirst-PrinciplesCalculations. Ferroelectrics, 447, 78–85. https://doi.org/10.1080/00150193.2013.821904 bibtex: '@article{Riefer_Sanna_Schmidt_2013, title={LiNb1-xTaxO3Electronic Structure and Optical Response fromFirst-PrinciplesCalculations}, volume={447}, DOI={10.1080/00150193.2013.821904}, journal={Ferroelectrics}, author={Riefer, A. and Sanna, S. and Schmidt, Wolf Gero}, year={2013}, pages={78–85} }' chicago: 'Riefer, A., S. Sanna, and Wolf Gero Schmidt. “LiNb1-XTaxO3Electronic Structure and Optical Response FromFirst-PrinciplesCalculations.” Ferroelectrics 447 (2013): 78–85. https://doi.org/10.1080/00150193.2013.821904.' ieee: A. Riefer, S. Sanna, and W. G. Schmidt, “LiNb1-xTaxO3Electronic Structure and Optical Response fromFirst-PrinciplesCalculations,” Ferroelectrics, vol. 447, pp. 78–85, 2013. mla: Riefer, A., et al. “LiNb1-XTaxO3Electronic Structure and Optical Response FromFirst-PrinciplesCalculations.” Ferroelectrics, vol. 447, 2013, pp. 78–85, doi:10.1080/00150193.2013.821904. short: A. Riefer, S. Sanna, W.G. Schmidt, Ferroelectrics 447 (2013) 78–85. date_created: 2019-10-15T06:45:01Z date_updated: 2022-01-06T06:51:45Z department: - _id: '15' - _id: '170' - _id: '295' doi: 10.1080/00150193.2013.821904 funded_apc: '1' intvolume: ' 447' language: - iso: eng page: 78-85 project: - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing publication: Ferroelectrics publication_identifier: issn: - 0015-0193 - 1563-5112 publication_status: published status: public title: LiNb1-xTaxO3Electronic Structure and Optical Response fromFirst-PrinciplesCalculations type: journal_article user_id: '16199' volume: 447 year: '2013' ... --- _id: '13520' abstract: - lang: eng text: Atomistic simulations in the framework of the density functional theory have been used to model morphologic and vibrational properties of lithium niobate–lithium tantalate mixed crystals as a function of the [Nb]/[Ta] ratio. Structural parameters such as the crystal volume and the lattice parameters a and c vary roughly linearly from LiTaO3 to LiNbO3, showing only minor deviations from the Vegard behavior. Our ab initio calculations demonstrate that the TO1, TO2 and TO4 vibrational modes become harder with increasing Nb concentration. TO3 becomes softer with increasing Nb content, instead. Furthermore, the investigated zone center A1 -TO phonon modes are characterized by a pronounced stoichiometry dependence. Frequency shifts as large as 30 cm−1 are expected as the [Nb]/[Ta] ratio grows from 0 to 1. Therefore, spectroscopic techniques sensitive to the A1 modes (such as Raman spectroscopy), can be employed for a direct and non-destructive determination of the crystal composition. author: - first_name: Simone full_name: Sanna, Simone last_name: Sanna - first_name: A. full_name: Riefer, A. last_name: Riefer - first_name: Sergej full_name: Neufeld, Sergej id: '23261' last_name: Neufeld - first_name: Wolf Gero full_name: Schmidt, Wolf Gero id: '468' last_name: Schmidt orcid: 0000-0002-2717-5076 - first_name: Gerhard full_name: Berth, Gerhard id: '53' last_name: Berth - first_name: Michael full_name: Rüsing, Michael id: '22501' last_name: Rüsing orcid: 0000-0003-4682-4577 - first_name: A. full_name: Widhalm, A. last_name: Widhalm - first_name: Artur full_name: Zrenner, Artur id: '606' last_name: Zrenner orcid: 0000-0002-5190-0944 citation: ama: Sanna S, Riefer A, Neufeld S, et al. Vibrational Fingerprints of LiNbO3-LiTaO3Mixed Crystals. Ferroelectrics. 2013;447(1):63-68. doi:10.1080/00150193.2013.821893 apa: Sanna, S., Riefer, A., Neufeld, S., Schmidt, W. G., Berth, G., Rüsing, M., Widhalm, A., & Zrenner, A. (2013). Vibrational Fingerprints of LiNbO3-LiTaO3Mixed Crystals. Ferroelectrics, 447(1), 63–68. https://doi.org/10.1080/00150193.2013.821893 bibtex: '@article{Sanna_Riefer_Neufeld_Schmidt_Berth_Rüsing_Widhalm_Zrenner_2013, title={Vibrational Fingerprints of LiNbO3-LiTaO3Mixed Crystals}, volume={447}, DOI={10.1080/00150193.2013.821893}, number={1}, journal={Ferroelectrics}, author={Sanna, Simone and Riefer, A. and Neufeld, Sergej and Schmidt, Wolf Gero and Berth, Gerhard and Rüsing, Michael and Widhalm, A. and Zrenner, Artur}, year={2013}, pages={63–68} }' chicago: 'Sanna, Simone, A. Riefer, Sergej Neufeld, Wolf Gero Schmidt, Gerhard Berth, Michael Rüsing, A. Widhalm, and Artur Zrenner. “Vibrational Fingerprints of LiNbO3-LiTaO3Mixed Crystals.” Ferroelectrics 447, no. 1 (2013): 63–68. https://doi.org/10.1080/00150193.2013.821893.' ieee: 'S. Sanna et al., “Vibrational Fingerprints of LiNbO3-LiTaO3Mixed Crystals,” Ferroelectrics, vol. 447, no. 1, pp. 63–68, 2013, doi: 10.1080/00150193.2013.821893.' mla: Sanna, Simone, et al. “Vibrational Fingerprints of LiNbO3-LiTaO3Mixed Crystals.” Ferroelectrics, vol. 447, no. 1, 2013, pp. 63–68, doi:10.1080/00150193.2013.821893. short: S. Sanna, A. Riefer, S. Neufeld, W.G. Schmidt, G. Berth, M. Rüsing, A. Widhalm, A. Zrenner, Ferroelectrics 447 (2013) 63–68. date_created: 2019-09-30T13:50:40Z date_updated: 2023-10-09T08:22:10Z department: - _id: '15' - _id: '170' - _id: '295' - _id: '230' doi: 10.1080/00150193.2013.821893 intvolume: ' 447' issue: '1' keyword: - Ferroelectrics - vibrational properties - LiNbO3 - LiTaO3 - mixed crystals language: - iso: eng page: 63-68 project: - _id: '52' name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing' publication: Ferroelectrics publication_identifier: issn: - 0015-0193 - 1563-5112 publication_status: published status: public title: Vibrational Fingerprints of LiNbO3-LiTaO3Mixed Crystals type: journal_article user_id: '14931' volume: 447 year: '2013' ... --- _id: '4377' abstract: - lang: eng text: Confocal Raman spectroscopy was performed as an archetype imaging method to study the ferroelectric domain structure of periodically poled lithium niobate. More precisely, the linkage out of spatial resolution and spectral information proved itself as very useful. Here a specific modulation of the Raman lines by the local variation of polarity and a non-symmetric measuring-signal across the domain structure were found, which allows for imaging of domain boundaries as well as oppositely orientated domains. The high potential of this method is demonstrated by the visualization of the ferroelectric domain structures based on various phonon modes. article_type: original author: - first_name: Gerhard full_name: Berth, Gerhard id: '53' last_name: Berth - first_name: Wjatscheslaw full_name: Hahn, Wjatscheslaw last_name: Hahn - first_name: Volker full_name: Wiedemeier, Volker last_name: Wiedemeier - first_name: Artur full_name: Zrenner, Artur id: '606' last_name: Zrenner orcid: 0000-0002-5190-0944 - first_name: Simone full_name: Sanna, Simone last_name: Sanna - first_name: Wolf Gero full_name: Schmidt, Wolf Gero last_name: Schmidt citation: ama: Berth G, Hahn W, Wiedemeier V, Zrenner A, Sanna S, Schmidt WG. Imaging of the Ferroelectric Domain Structures by Confocal Raman Spectroscopy. Ferroelectrics. 2011;420(1):44-48. doi:10.1080/00150193.2011.594774 apa: Berth, G., Hahn, W., Wiedemeier, V., Zrenner, A., Sanna, S., & Schmidt, W. G. (2011). Imaging of the Ferroelectric Domain Structures by Confocal Raman Spectroscopy. Ferroelectrics, 420(1), 44–48. https://doi.org/10.1080/00150193.2011.594774 bibtex: '@article{Berth_Hahn_Wiedemeier_Zrenner_Sanna_Schmidt_2011, title={Imaging of the Ferroelectric Domain Structures by Confocal Raman Spectroscopy}, volume={420}, DOI={10.1080/00150193.2011.594774}, number={1}, journal={Ferroelectrics}, publisher={Informa UK Limited}, author={Berth, Gerhard and Hahn, Wjatscheslaw and Wiedemeier, Volker and Zrenner, Artur and Sanna, Simone and Schmidt, Wolf Gero}, year={2011}, pages={44–48} }' chicago: 'Berth, Gerhard, Wjatscheslaw Hahn, Volker Wiedemeier, Artur Zrenner, Simone Sanna, and Wolf Gero Schmidt. “Imaging of the Ferroelectric Domain Structures by Confocal Raman Spectroscopy.” Ferroelectrics 420, no. 1 (2011): 44–48. https://doi.org/10.1080/00150193.2011.594774.' ieee: G. Berth, W. Hahn, V. Wiedemeier, A. Zrenner, S. Sanna, and W. G. Schmidt, “Imaging of the Ferroelectric Domain Structures by Confocal Raman Spectroscopy,” Ferroelectrics, vol. 420, no. 1, pp. 44–48, 2011. mla: Berth, Gerhard, et al. “Imaging of the Ferroelectric Domain Structures by Confocal Raman Spectroscopy.” Ferroelectrics, vol. 420, no. 1, Informa UK Limited, 2011, pp. 44–48, doi:10.1080/00150193.2011.594774. short: G. Berth, W. Hahn, V. Wiedemeier, A. Zrenner, S. Sanna, W.G. Schmidt, Ferroelectrics 420 (2011) 44–48. date_created: 2018-09-11T14:10:35Z date_updated: 2022-01-06T07:01:00Z department: - _id: '15' - _id: '230' - _id: '35' doi: 10.1080/00150193.2011.594774 intvolume: ' 420' issue: '1' keyword: - Raman spectroscopy - ferroelectric domains - LiNbO3 - confocal imaging language: - iso: eng page: 44-48 publication: Ferroelectrics publication_identifier: issn: - 0015-0193 - 1563-5112 publication_status: published publisher: Informa UK Limited status: public title: Imaging of the Ferroelectric Domain Structures by Confocal Raman Spectroscopy type: journal_article user_id: '49428' volume: 420 year: '2011' ... --- _id: '13561' author: - first_name: Gerhard full_name: Berth, Gerhard id: '53' last_name: Berth - first_name: Wjatscheslaw full_name: Hahn, Wjatscheslaw last_name: Hahn - first_name: Volker full_name: Wiedemeier, Volker last_name: Wiedemeier - first_name: Artur full_name: Zrenner, Artur id: '606' last_name: Zrenner orcid: 0000-0002-5190-0944 - first_name: Simone full_name: Sanna, Simone last_name: Sanna - first_name: Wolf Gero full_name: Schmidt, Wolf Gero id: '468' last_name: Schmidt orcid: 0000-0002-2717-5076 citation: ama: Berth G, Hahn W, Wiedemeier V, Zrenner A, Sanna S, Schmidt WG. Imaging of the Ferroelectric Domain Structures by Confocal Raman Spectroscopy. Ferroelectrics. 2011;420:44-48. doi:10.1080/00150193.2011.594774 apa: Berth, G., Hahn, W., Wiedemeier, V., Zrenner, A., Sanna, S., & Schmidt, W. G. (2011). Imaging of the Ferroelectric Domain Structures by Confocal Raman Spectroscopy. Ferroelectrics, 420, 44–48. https://doi.org/10.1080/00150193.2011.594774 bibtex: '@article{Berth_Hahn_Wiedemeier_Zrenner_Sanna_Schmidt_2011, title={Imaging of the Ferroelectric Domain Structures by Confocal Raman Spectroscopy}, volume={420}, DOI={10.1080/00150193.2011.594774}, journal={Ferroelectrics}, author={Berth, Gerhard and Hahn, Wjatscheslaw and Wiedemeier, Volker and Zrenner, Artur and Sanna, Simone and Schmidt, Wolf Gero}, year={2011}, pages={44–48} }' chicago: 'Berth, Gerhard, Wjatscheslaw Hahn, Volker Wiedemeier, Artur Zrenner, Simone Sanna, and Wolf Gero Schmidt. “Imaging of the Ferroelectric Domain Structures by Confocal Raman Spectroscopy.” Ferroelectrics 420 (2011): 44–48. https://doi.org/10.1080/00150193.2011.594774.' ieee: G. Berth, W. Hahn, V. Wiedemeier, A. Zrenner, S. Sanna, and W. G. Schmidt, “Imaging of the Ferroelectric Domain Structures by Confocal Raman Spectroscopy,” Ferroelectrics, vol. 420, pp. 44–48, 2011. mla: Berth, Gerhard, et al. “Imaging of the Ferroelectric Domain Structures by Confocal Raman Spectroscopy.” Ferroelectrics, vol. 420, 2011, pp. 44–48, doi:10.1080/00150193.2011.594774. short: G. Berth, W. Hahn, V. Wiedemeier, A. Zrenner, S. Sanna, W.G. Schmidt, Ferroelectrics 420 (2011) 44–48. date_created: 2019-10-01T08:48:15Z date_updated: 2022-01-06T06:51:38Z department: - _id: '15' - _id: '170' - _id: '295' - _id: '290' doi: 10.1080/00150193.2011.594774 funded_apc: '1' intvolume: ' 420' language: - iso: eng page: 44-48 publication: Ferroelectrics publication_identifier: issn: - 0015-0193 - 1563-5112 publication_status: published status: public title: Imaging of the Ferroelectric Domain Structures by Confocal Raman Spectroscopy type: journal_article user_id: '16199' volume: 420 year: '2011' ... --- _id: '4543' abstract: - lang: eng text: The vibrational properties of the LiNbO3 (0001) surfaces have been investigated both from first principles and with Raman spectroscopy measurements. Firstly, the phonon modes of bulk and of the (0001) surface are calculated by means of the density functional theory. Our calculations reveal the existence of localised vibrational modes both at the positive and at the negative surface. The surface vibrations are found at energies above and within the bulk bands. Phonon modes localised at the positive and at the negative surface differ substantially. In a second step, the Raman spectra of LiNbO3 bulk and of the two surfaces have been measured. Raman spectroscopy is shown to be sensitive to differences between bulk and surface and between positive and negative surface. The calculated and measured frequencies are in agreement within the error of the method. article_type: original author: - first_name: S. full_name: Sanna, S. last_name: Sanna - first_name: Gerhard full_name: Berth, Gerhard id: '53' last_name: Berth - first_name: W. full_name: Hahn, W. last_name: Hahn - first_name: A. full_name: Widhalm, A. last_name: Widhalm - first_name: Artur full_name: Zrenner, Artur id: '606' last_name: Zrenner orcid: 0000-0002-5190-0944 - first_name: Wolf Gero full_name: Schmidt, Wolf Gero id: '468' last_name: Schmidt orcid: 0000-0002-2717-5076 citation: ama: Sanna S, Berth G, Hahn W, Widhalm A, Zrenner A, Schmidt WG. Localised Phonon Modes at LiNbO3(0001) Surfaces. Ferroelectrics. 2011;419(1):1-8. doi:10.1080/00150193.2011.594396 apa: Sanna, S., Berth, G., Hahn, W., Widhalm, A., Zrenner, A., & Schmidt, W. G. (2011). Localised Phonon Modes at LiNbO3(0001) Surfaces. Ferroelectrics, 419(1), 1–8. https://doi.org/10.1080/00150193.2011.594396 bibtex: '@article{Sanna_Berth_Hahn_Widhalm_Zrenner_Schmidt_2011, title={Localised Phonon Modes at LiNbO3(0001) Surfaces}, volume={419}, DOI={10.1080/00150193.2011.594396}, number={1}, journal={Ferroelectrics}, publisher={Informa UK Limited}, author={Sanna, S. and Berth, Gerhard and Hahn, W. and Widhalm, A. and Zrenner, Artur and Schmidt, Wolf Gero}, year={2011}, pages={1–8} }' chicago: 'Sanna, S., Gerhard Berth, W. Hahn, A. Widhalm, Artur Zrenner, and Wolf Gero Schmidt. “Localised Phonon Modes at LiNbO3(0001) Surfaces.” Ferroelectrics 419, no. 1 (2011): 1–8. https://doi.org/10.1080/00150193.2011.594396.' ieee: 'S. Sanna, G. Berth, W. Hahn, A. Widhalm, A. Zrenner, and W. G. Schmidt, “Localised Phonon Modes at LiNbO3(0001) Surfaces,” Ferroelectrics, vol. 419, no. 1, pp. 1–8, 2011, doi: 10.1080/00150193.2011.594396.' mla: Sanna, S., et al. “Localised Phonon Modes at LiNbO3(0001) Surfaces.” Ferroelectrics, vol. 419, no. 1, Informa UK Limited, 2011, pp. 1–8, doi:10.1080/00150193.2011.594396. short: S. Sanna, G. Berth, W. Hahn, A. Widhalm, A. Zrenner, W.G. Schmidt, Ferroelectrics 419 (2011) 1–8. date_created: 2018-09-20T11:26:53Z date_updated: 2023-02-10T22:42:02Z department: - _id: '15' - _id: '230' - _id: '35' - _id: '170' - _id: '295' doi: 10.1080/00150193.2011.594396 intvolume: ' 419' issue: '1' language: - iso: eng page: 1-8 project: - _id: '52' name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing' publication: Ferroelectrics publication_identifier: issn: - 0015-0193 - 1563-5112 publication_status: published publisher: Informa UK Limited status: public title: Localised Phonon Modes at LiNbO3(0001) Surfaces type: journal_article user_id: '14931' volume: 419 year: '2011' ... --- _id: '39741' author: - first_name: Heinz-Siegfried full_name: Kitzerow, Heinz-Siegfried id: '254' last_name: Kitzerow citation: ama: 'Kitzerow H-S. Blue Phases: Prior Art, Potential Polar Effects, Challenges. Ferroelectrics. 2010;395(1):66-85. doi:10.1080/00150191003683807' apa: 'Kitzerow, H.-S. (2010). Blue Phases: Prior Art, Potential Polar Effects, Challenges. Ferroelectrics, 395(1), 66–85. https://doi.org/10.1080/00150191003683807' bibtex: '@article{Kitzerow_2010, title={Blue Phases: Prior Art, Potential Polar Effects, Challenges}, volume={395}, DOI={10.1080/00150191003683807}, number={1}, journal={Ferroelectrics}, publisher={Informa UK Limited}, author={Kitzerow, Heinz-Siegfried}, year={2010}, pages={66–85} }' chicago: 'Kitzerow, Heinz-Siegfried. “Blue Phases: Prior Art, Potential Polar Effects, Challenges.” Ferroelectrics 395, no. 1 (2010): 66–85. https://doi.org/10.1080/00150191003683807.' ieee: 'H.-S. Kitzerow, “Blue Phases: Prior Art, Potential Polar Effects, Challenges,” Ferroelectrics, vol. 395, no. 1, pp. 66–85, 2010, doi: 10.1080/00150191003683807.' mla: 'Kitzerow, Heinz-Siegfried. “Blue Phases: Prior Art, Potential Polar Effects, Challenges.” Ferroelectrics, vol. 395, no. 1, Informa UK Limited, 2010, pp. 66–85, doi:10.1080/00150191003683807.' short: H.-S. Kitzerow, Ferroelectrics 395 (2010) 66–85. date_created: 2023-01-24T18:47:05Z date_updated: 2023-01-24T18:47:37Z department: - _id: '313' - _id: '230' - _id: '638' doi: 10.1080/00150191003683807 intvolume: ' 395' issue: '1' keyword: - Condensed Matter Physics - Electronic - Optical and Magnetic Materials language: - iso: eng page: 66-85 publication: Ferroelectrics publication_identifier: issn: - 0015-0193 - 1563-5112 publication_status: published publisher: Informa UK Limited status: public title: 'Blue Phases: Prior Art, Potential Polar Effects, Challenges' type: journal_article user_id: '254' volume: 395 year: '2010' ... --- _id: '40082' author: - first_name: Heinz-Siegfried full_name: Kitzerow, Heinz-Siegfried id: '254' last_name: Kitzerow citation: ama: 'Kitzerow H-S. Blue Phases: Prior Art, Potential Polar Effects, Challenges. Ferroelectrics. 2010;395(1):66-85. doi:10.1080/00150191003683807' apa: 'Kitzerow, H.-S. (2010). Blue Phases: Prior Art, Potential Polar Effects, Challenges. Ferroelectrics, 395(1), 66–85. https://doi.org/10.1080/00150191003683807' bibtex: '@article{Kitzerow_2010, title={Blue Phases: Prior Art, Potential Polar Effects, Challenges}, volume={395}, DOI={10.1080/00150191003683807}, number={1}, journal={Ferroelectrics}, publisher={Informa UK Limited}, author={Kitzerow, Heinz-Siegfried}, year={2010}, pages={66–85} }' chicago: 'Kitzerow, Heinz-Siegfried. “Blue Phases: Prior Art, Potential Polar Effects, Challenges.” Ferroelectrics 395, no. 1 (2010): 66–85. https://doi.org/10.1080/00150191003683807.' ieee: 'H.-S. Kitzerow, “Blue Phases: Prior Art, Potential Polar Effects, Challenges,” Ferroelectrics, vol. 395, no. 1, pp. 66–85, 2010, doi: 10.1080/00150191003683807.' mla: 'Kitzerow, Heinz-Siegfried. “Blue Phases: Prior Art, Potential Polar Effects, Challenges.” Ferroelectrics, vol. 395, no. 1, Informa UK Limited, 2010, pp. 66–85, doi:10.1080/00150191003683807.' short: H.-S. Kitzerow, Ferroelectrics 395 (2010) 66–85. date_created: 2023-01-25T16:30:48Z date_updated: 2023-01-25T16:41:17Z department: - _id: '313' - _id: '638' doi: 10.1080/00150191003683807 intvolume: ' 395' issue: '1' keyword: - Condensed Matter Physics - Electronic - Optical and Magnetic Materials language: - iso: eng page: 66-85 publication: Ferroelectrics publication_identifier: issn: - 0015-0193 - 1563-5112 publication_status: published publisher: Informa UK Limited status: public title: 'Blue Phases: Prior Art, Potential Polar Effects, Challenges' type: journal_article user_id: '254' volume: 395 year: '2010' ... --- _id: '4553' abstract: - lang: eng text: We present results on ferroelectric micro-domains obtained by confocal second harmonic microscopy. The high potential of this technique is demonstrated by imaging periodic ferroelectric domain structures in the surface of planar X-cut lithium niobate (LN) and in the body of ridges fabricated by plasma etching on X-cut LN as well. In both cases the measured second harmonic signal reveals a strong contrast between inverted and non-inverted domain sections. This enabled a depth-resolved non-destructive tomography of micro-domains in ridge structures in all three dimensions. article_type: original author: - first_name: Gerhard full_name: Berth, Gerhard id: '53' last_name: Berth - first_name: Volker full_name: Wiedemeier, Volker last_name: Wiedemeier - first_name: Klaus-Peter full_name: Hüsch, Klaus-Peter last_name: Hüsch - first_name: Li full_name: Gui, Li last_name: Gui - first_name: Hui full_name: Hu, Hui last_name: Hu - first_name: Wolfgang full_name: Sohler, Wolfgang last_name: Sohler - first_name: Artur full_name: Zrenner, Artur id: '606' last_name: Zrenner orcid: 0000-0002-5190-0944 citation: ama: Berth G, Wiedemeier V, Hüsch K-P, et al. Imaging of Ferroelectric Micro-Domains in X-Cut Lithium Niobate by Confocal Second Harmonic Microscopy. Ferroelectrics. 2009;389(1):132-141. doi:10.1080/00150190902993267 apa: Berth, G., Wiedemeier, V., Hüsch, K.-P., Gui, L., Hu, H., Sohler, W., & Zrenner, A. (2009). Imaging of Ferroelectric Micro-Domains in X-Cut Lithium Niobate by Confocal Second Harmonic Microscopy. Ferroelectrics, 389(1), 132–141. https://doi.org/10.1080/00150190902993267 bibtex: '@article{Berth_Wiedemeier_Hüsch_Gui_Hu_Sohler_Zrenner_2009, title={Imaging of Ferroelectric Micro-Domains in X-Cut Lithium Niobate by Confocal Second Harmonic Microscopy}, volume={389}, DOI={10.1080/00150190902993267}, number={1}, journal={Ferroelectrics}, publisher={Informa UK Limited}, author={Berth, Gerhard and Wiedemeier, Volker and Hüsch, Klaus-Peter and Gui, Li and Hu, Hui and Sohler, Wolfgang and Zrenner, Artur}, year={2009}, pages={132–141} }' chicago: 'Berth, Gerhard, Volker Wiedemeier, Klaus-Peter Hüsch, Li Gui, Hui Hu, Wolfgang Sohler, and Artur Zrenner. “Imaging of Ferroelectric Micro-Domains in X-Cut Lithium Niobate by Confocal Second Harmonic Microscopy.” Ferroelectrics 389, no. 1 (2009): 132–41. https://doi.org/10.1080/00150190902993267.' ieee: G. Berth et al., “Imaging of Ferroelectric Micro-Domains in X-Cut Lithium Niobate by Confocal Second Harmonic Microscopy,” Ferroelectrics, vol. 389, no. 1, pp. 132–141, 2009. mla: Berth, Gerhard, et al. “Imaging of Ferroelectric Micro-Domains in X-Cut Lithium Niobate by Confocal Second Harmonic Microscopy.” Ferroelectrics, vol. 389, no. 1, Informa UK Limited, 2009, pp. 132–41, doi:10.1080/00150190902993267. short: G. Berth, V. Wiedemeier, K.-P. Hüsch, L. Gui, H. Hu, W. Sohler, A. Zrenner, Ferroelectrics 389 (2009) 132–141. date_created: 2018-09-20T12:54:14Z date_updated: 2022-01-06T07:01:09Z department: - _id: '15' - _id: '230' - _id: '35' doi: 10.1080/00150190902993267 intvolume: ' 389' issue: '1' keyword: - Nonlinear microscopy - ferroelectric micro-domains - confocal imaging - LiNbO3 language: - iso: eng page: 132-141 publication: Ferroelectrics publication_identifier: issn: - 0015-0193 - 1563-5112 publication_status: published publisher: Informa UK Limited status: public title: Imaging of Ferroelectric Micro-Domains in X-Cut Lithium Niobate by Confocal Second Harmonic Microscopy type: journal_article user_id: '49428' volume: 389 year: '2009' ... --- _id: '40083' author: - first_name: Jochen full_name: Glossmann, Jochen last_name: Glossmann - first_name: Andreas full_name: Hoischen, Andreas last_name: Hoischen - first_name: Thorsten full_name: Roder, Thorsten last_name: Roder - first_name: Heinz-Siegfried full_name: Kitzerow, Heinz-Siegfried id: '254' last_name: Kitzerow citation: ama: Glossmann J, Hoischen A, Roder T, Kitzerow H-S. Asymmetric switching and storage effects in ferroelectric and antiferroelectric gels and polymers. Ferroelectrics. 2000;243(1):95-106. doi:10.1080/00150190008008011 apa: Glossmann, J., Hoischen, A., Roder, T., & Kitzerow, H.-S. (2000). Asymmetric switching and storage effects in ferroelectric and antiferroelectric gels and polymers. Ferroelectrics, 243(1), 95–106. https://doi.org/10.1080/00150190008008011 bibtex: '@article{Glossmann_Hoischen_Roder_Kitzerow_2000, title={Asymmetric switching and storage effects in ferroelectric and antiferroelectric gels and polymers}, volume={243}, DOI={10.1080/00150190008008011}, number={1}, journal={Ferroelectrics}, publisher={Informa UK Limited}, author={Glossmann, Jochen and Hoischen, Andreas and Roder, Thorsten and Kitzerow, Heinz-Siegfried}, year={2000}, pages={95–106} }' chicago: 'Glossmann, Jochen, Andreas Hoischen, Thorsten Roder, and Heinz-Siegfried Kitzerow. “Asymmetric Switching and Storage Effects in Ferroelectric and Antiferroelectric Gels and Polymers.” Ferroelectrics 243, no. 1 (2000): 95–106. https://doi.org/10.1080/00150190008008011.' ieee: 'J. Glossmann, A. Hoischen, T. Roder, and H.-S. Kitzerow, “Asymmetric switching and storage effects in ferroelectric and antiferroelectric gels and polymers,” Ferroelectrics, vol. 243, no. 1, pp. 95–106, 2000, doi: 10.1080/00150190008008011.' mla: Glossmann, Jochen, et al. “Asymmetric Switching and Storage Effects in Ferroelectric and Antiferroelectric Gels and Polymers.” Ferroelectrics, vol. 243, no. 1, Informa UK Limited, 2000, pp. 95–106, doi:10.1080/00150190008008011. short: J. Glossmann, A. Hoischen, T. Roder, H.-S. Kitzerow, Ferroelectrics 243 (2000) 95–106. date_created: 2023-01-25T16:34:10Z date_updated: 2023-01-25T16:41:08Z department: - _id: '313' - _id: '638' doi: 10.1080/00150190008008011 intvolume: ' 243' issue: '1' keyword: - Condensed Matter Physics - Electronic - Optical and Magnetic Materials language: - iso: eng page: 95-106 publication: Ferroelectrics publication_identifier: issn: - 0015-0193 - 1563-5112 publication_status: published publisher: Informa UK Limited status: public title: Asymmetric switching and storage effects in ferroelectric and antiferroelectric gels and polymers type: journal_article user_id: '254' volume: 243 year: '2000' ... --- _id: '40081' author: - first_name: Heinz-Siegfried full_name: Kitzerow, Heinz-Siegfried id: '254' last_name: Kitzerow - first_name: Andrew J. full_name: Slaney, Andrew J. last_name: Slaney - first_name: John W. full_name: Goodby, John W. last_name: Goodby citation: ama: Kitzerow H-S, Slaney AJ, Goodby JW. Electric field-induced transition from the twist grain boundary TGBAphase to the tilted smectic SmC* phase. Ferroelectrics. 1996;179(1):61-80. doi:10.1080/00150199608007874 apa: Kitzerow, H.-S., Slaney, A. J., & Goodby, J. W. (1996). Electric field-induced transition from the twist grain boundary TGBAphase to the tilted smectic SmC* phase. Ferroelectrics, 179(1), 61–80. https://doi.org/10.1080/00150199608007874 bibtex: '@article{Kitzerow_Slaney_Goodby_1996, title={Electric field-induced transition from the twist grain boundary TGBAphase to the tilted smectic SmC* phase}, volume={179}, DOI={10.1080/00150199608007874}, number={1}, journal={Ferroelectrics}, publisher={Informa UK Limited}, author={Kitzerow, Heinz-Siegfried and Slaney, Andrew J. and Goodby, John W.}, year={1996}, pages={61–80} }' chicago: 'Kitzerow, Heinz-Siegfried, Andrew J. Slaney, and John W. Goodby. “Electric Field-Induced Transition from the Twist Grain Boundary TGBAPhase to the Tilted Smectic SmC* Phase.” Ferroelectrics 179, no. 1 (1996): 61–80. https://doi.org/10.1080/00150199608007874.' ieee: 'H.-S. Kitzerow, A. J. Slaney, and J. W. Goodby, “Electric field-induced transition from the twist grain boundary TGBAphase to the tilted smectic SmC* phase,” Ferroelectrics, vol. 179, no. 1, pp. 61–80, 1996, doi: 10.1080/00150199608007874.' mla: Kitzerow, Heinz-Siegfried, et al. “Electric Field-Induced Transition from the Twist Grain Boundary TGBAPhase to the Tilted Smectic SmC* Phase.” Ferroelectrics, vol. 179, no. 1, Informa UK Limited, 1996, pp. 61–80, doi:10.1080/00150199608007874. short: H.-S. Kitzerow, A.J. Slaney, J.W. Goodby, Ferroelectrics 179 (1996) 61–80. date_created: 2023-01-25T16:28:56Z date_updated: 2023-01-25T16:41:25Z department: - _id: '313' doi: 10.1080/00150199608007874 extern: '1' intvolume: ' 179' issue: '1' keyword: - Condensed Matter Physics - Electronic - Optical and Magnetic Materials language: - iso: eng page: 61-80 publication: Ferroelectrics publication_identifier: issn: - 0015-0193 - 1563-5112 publication_status: published publisher: Informa UK Limited status: public title: Electric field-induced transition from the twist grain boundary TGBAphase to the tilted smectic SmC* phase type: journal_article user_id: '254' volume: 179 year: '1996' ... --- _id: '40079' author: - first_name: Heinz-Siegfried full_name: Kitzerow, Heinz-Siegfried id: '254' last_name: Kitzerow - first_name: Peter P. full_name: Crooker, Peter P. last_name: Crooker citation: ama: Kitzerow H-S, Crooker PP. Polymer-dispersed cholesteric liquid crystals - challenge for research and application. Ferroelectrics. 1991;122(1):183-196. doi:10.1080/00150199108226040 apa: Kitzerow, H.-S., & Crooker, P. P. (1991). Polymer-dispersed cholesteric liquid crystals - challenge for research and application. Ferroelectrics, 122(1), 183–196. https://doi.org/10.1080/00150199108226040 bibtex: '@article{Kitzerow_Crooker_1991, title={Polymer-dispersed cholesteric liquid crystals - challenge for research and application}, volume={122}, DOI={10.1080/00150199108226040}, number={1}, journal={Ferroelectrics}, publisher={Informa UK Limited}, author={Kitzerow, Heinz-Siegfried and Crooker, Peter P.}, year={1991}, pages={183–196} }' chicago: 'Kitzerow, Heinz-Siegfried, and Peter P. Crooker. “Polymer-Dispersed Cholesteric Liquid Crystals - Challenge for Research and Application.” Ferroelectrics 122, no. 1 (1991): 183–96. https://doi.org/10.1080/00150199108226040.' ieee: 'H.-S. Kitzerow and P. P. Crooker, “Polymer-dispersed cholesteric liquid crystals - challenge for research and application,” Ferroelectrics, vol. 122, no. 1, pp. 183–196, 1991, doi: 10.1080/00150199108226040.' mla: Kitzerow, Heinz-Siegfried, and Peter P. Crooker. “Polymer-Dispersed Cholesteric Liquid Crystals - Challenge for Research and Application.” Ferroelectrics, vol. 122, no. 1, Informa UK Limited, 1991, pp. 183–96, doi:10.1080/00150199108226040. short: H.-S. Kitzerow, P.P. Crooker, Ferroelectrics 122 (1991) 183–196. date_created: 2023-01-25T16:25:42Z date_updated: 2023-01-25T16:41:08Z department: - _id: '313' doi: 10.1080/00150199108226040 extern: '1' intvolume: ' 122' issue: '1' keyword: - Condensed Matter Physics - Electronic - Optical and Magnetic Materials language: - iso: eng page: 183-196 publication: Ferroelectrics publication_identifier: issn: - 0015-0193 - 1563-5112 publication_status: published publisher: Informa UK Limited status: public title: Polymer-dispersed cholesteric liquid crystals - challenge for research and application type: journal_article user_id: '254' volume: 122 year: '1991' ...