Vibrational properties of LiNb1−xTaxO3 mixed crystals

M. Rüsing, S. Sanna, S. Neufeld, G. Berth, W.G. Schmidt, A. Zrenner, H. Yu, Y. Wang, H. Zhang, Physical Review B (2016).

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Journal Article | Published | English
Congruent lithium niobate and lithium tantalate mixed crystals have been grown over the complete compositional range with the Czochralski method. The structural and vibrational properties of the mixed crystals are studied extensively by x-ray diffraction measurements, Raman spectroscopy, and density functional theory. The measured lattice parameters and vibrational frequencies are in good agreement with our theoretical predictions. The observed dependence of the Raman frequencies on the crystal composition is discussed on the basis of the calculated phonon displacement patterns. The phononic contribution to the static dielectric tensor is calculated by means of the generalized Lyddane-Sachs-Teller relation. Due to the pronounced dependence of the optical response on the Ta concentration, lithium niobate tantalate mixed crystals represent a perfect model system to study the properties of uniaxial mixed ferroelectric materials for application in integrated optics.
Publishing Year
Journal Title
Physical Review B
Financial disclosure
Article Processing Charge funded by the Deutsche Forschungsgemeinschaft.

Cite this

Rüsing M, Sanna S, Neufeld S, et al. Vibrational properties of LiNb1−xTaxO3 mixed crystals. Physical Review B. Published online 2016. doi:10.1103/physrevb.93.184305
Rüsing, M., Sanna, S., Neufeld, S., Berth, G., Schmidt, W. G., Zrenner, A., Yu, H., Wang, Y., & Zhang, H. (2016). Vibrational properties of LiNb1−xTaxO3 mixed crystals. Physical Review B.
@article{Rüsing_Sanna_Neufeld_Berth_Schmidt_Zrenner_Yu_Wang_Zhang_2016, title={Vibrational properties of LiNb1−xTaxO3 mixed crystals}, DOI={10.1103/physrevb.93.184305}, journal={Physical Review B}, author={Rüsing, Michael and Sanna, Simone and Neufeld, Sergej and Berth, Gerhard and Schmidt, Wolf Gero and Zrenner, Artur and Yu, H. and Wang, Y. and Zhang, H.}, year={2016} }
Rüsing, Michael, Simone Sanna, Sergej Neufeld, Gerhard Berth, Wolf Gero Schmidt, Artur Zrenner, H. Yu, Y. Wang, and H. Zhang. “Vibrational Properties of LiNb1−xTaxO3 Mixed Crystals.” Physical Review B, 2016.
M. Rüsing et al., “Vibrational properties of LiNb1−xTaxO3 mixed crystals,” Physical Review B, 2016, doi: 10.1103/physrevb.93.184305.
Rüsing, Michael, et al. “Vibrational Properties of LiNb1−xTaxO3 Mixed Crystals.” Physical Review B, 2016, doi:10.1103/physrevb.93.184305.


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