---
_id: '59271'
abstract:
- lang: eng
  text: Lithium niobate (LNO) and lithium tantalate (LTO) see widespread use in fundamental
    research and commercial technologies reaching from electronics over classical
    optics to integrated quantum communication. The mixed crystal system lithium niobate
    tantalate (LNT) allows for the dedicate engineering of material properties by
    combining the advantages of the two parental materials LNO and LTO. Vibrational
    spectroscopies such as Raman spectroscopy or (Fourier transform) infrared (IR)
    spectroscopy are vital techniques to provide detailed insight into the material
    properties, which is central to the analysis and optimization of devices. This
    work presents a joint experimental–theoretical approach allowing to unambiguously
    assign the spectral features in the LNT material family through both Raman and
    IR spectroscopy, as well as providing an in‐depth explanation for the observed
    scattering efficiencies based on first‐principles calculations. The phononic contribution
    to the static dielectric tensor is calculated from the experimental and theoretical
    data using the generalized Lyddane–Sachs–Teller relation and compared with the
    results of the first‐principles calculations.
author:
- first_name: Felix
  full_name: Bernhardt, Felix
  last_name: Bernhardt
- first_name: Soham
  full_name: Gharat, Soham
  last_name: Gharat
- first_name: Alexander
  full_name: Kapp, Alexander
  last_name: Kapp
- first_name: Florian
  full_name: Pfeiffer, Florian
  last_name: Pfeiffer
- first_name: Robin
  full_name: Buschbeck, Robin
  last_name: Buschbeck
- first_name: Franz
  full_name: Hempel, Franz
  last_name: Hempel
- first_name: Oleksiy
  full_name: Pashkin, Oleksiy
  last_name: Pashkin
- first_name: Susanne C.
  full_name: Kehr, Susanne C.
  last_name: Kehr
- first_name: Michael
  full_name: Rüsing, Michael
  id: '22501'
  last_name: Rüsing
  orcid: 0000-0003-4682-4577
- first_name: Simone
  full_name: Sanna, Simone
  last_name: Sanna
- first_name: Lukas M.
  full_name: Eng, Lukas M.
  last_name: Eng
citation:
  ama: 'Bernhardt F, Gharat S, Kapp A, et al. Lattice Dynamics of LiNb(1–x)Ta(x)O3
    Solid Solutions: Theory and Experiment. <i>physica status solidi (a)</i>. 2024;222(1):2300968.
    doi:<a href="https://doi.org/10.1002/pssa.202300968">10.1002/pssa.202300968</a>'
  apa: 'Bernhardt, F., Gharat, S., Kapp, A., Pfeiffer, F., Buschbeck, R., Hempel,
    F., Pashkin, O., Kehr, S. C., Rüsing, M., Sanna, S., &#38; Eng, L. M. (2024).
    Lattice Dynamics of LiNb(1–x)Ta(x)O3 Solid Solutions: Theory and Experiment. <i>Physica
    Status Solidi (a)</i>, <i>222</i>(1), 2300968. <a href="https://doi.org/10.1002/pssa.202300968">https://doi.org/10.1002/pssa.202300968</a>'
  bibtex: '@article{Bernhardt_Gharat_Kapp_Pfeiffer_Buschbeck_Hempel_Pashkin_Kehr_Rüsing_Sanna_et
    al._2024, title={Lattice Dynamics of LiNb(1–x)Ta(x)O3 Solid Solutions: Theory
    and Experiment}, volume={222}, DOI={<a href="https://doi.org/10.1002/pssa.202300968">10.1002/pssa.202300968</a>},
    number={1}, journal={physica status solidi (a)}, publisher={Wiley}, author={Bernhardt,
    Felix and Gharat, Soham and Kapp, Alexander and Pfeiffer, Florian and Buschbeck,
    Robin and Hempel, Franz and Pashkin, Oleksiy and Kehr, Susanne C. and Rüsing,
    Michael and Sanna, Simone and et al.}, year={2024}, pages={2300968} }'
  chicago: 'Bernhardt, Felix, Soham Gharat, Alexander Kapp, Florian Pfeiffer, Robin
    Buschbeck, Franz Hempel, Oleksiy Pashkin, et al. “Lattice Dynamics of LiNb(1–x)Ta(x)O3
    Solid Solutions: Theory and Experiment.” <i>Physica Status Solidi (a)</i> 222,
    no. 1 (2024): 2300968. <a href="https://doi.org/10.1002/pssa.202300968">https://doi.org/10.1002/pssa.202300968</a>.'
  ieee: 'F. Bernhardt <i>et al.</i>, “Lattice Dynamics of LiNb(1–x)Ta(x)O3 Solid Solutions:
    Theory and Experiment,” <i>physica status solidi (a)</i>, vol. 222, no. 1, p.
    2300968, 2024, doi: <a href="https://doi.org/10.1002/pssa.202300968">10.1002/pssa.202300968</a>.'
  mla: 'Bernhardt, Felix, et al. “Lattice Dynamics of LiNb(1–x)Ta(x)O3 Solid Solutions:
    Theory and Experiment.” <i>Physica Status Solidi (a)</i>, vol. 222, no. 1, Wiley,
    2024, p. 2300968, doi:<a href="https://doi.org/10.1002/pssa.202300968">10.1002/pssa.202300968</a>.'
  short: F. Bernhardt, S. Gharat, A. Kapp, F. Pfeiffer, R. Buschbeck, F. Hempel, O.
    Pashkin, S.C. Kehr, M. Rüsing, S. Sanna, L.M. Eng, Physica Status Solidi (a) 222
    (2024) 2300968.
date_created: 2025-04-02T16:04:58Z
date_updated: 2025-04-02T16:07:19Z
department:
- _id: '15'
- _id: '623'
- _id: '288'
doi: 10.1002/pssa.202300968
intvolume: '       222'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1002/pssa.202300968
oa: '1'
page: '2300968'
publication: physica status solidi (a)
publication_identifier:
  issn:
  - 1862-6300
  - 1862-6319
publication_status: published
publisher: Wiley
status: public
title: 'Lattice Dynamics of LiNb(1–x)Ta(x)O3 Solid Solutions: Theory and Experiment'
type: journal_article
user_id: '22501'
volume: 222
year: '2024'
...
---
_id: '39556'
author:
- first_name: T.
  full_name: Diekmann, T.
  last_name: Diekmann
- first_name: C.
  full_name: Pannemann, C.
  last_name: Pannemann
- first_name: Ulrich
  full_name: Hilleringmann, Ulrich
  id: '20179'
  last_name: Hilleringmann
citation:
  ama: Diekmann T, Pannemann C, Hilleringmann U. Dielectric layers for organic field
    effect transistors as gate dielectric and surface passivation. <i>physica status
    solidi (a)</i>. 2008;205(3):564-577. doi:<a href="https://doi.org/10.1002/pssa.200723406">10.1002/pssa.200723406</a>
  apa: Diekmann, T., Pannemann, C., &#38; Hilleringmann, U. (2008). Dielectric layers
    for organic field effect transistors as gate dielectric and surface passivation.
    <i>Physica Status Solidi (a)</i>, <i>205</i>(3), 564–577. <a href="https://doi.org/10.1002/pssa.200723406">https://doi.org/10.1002/pssa.200723406</a>
  bibtex: '@article{Diekmann_Pannemann_Hilleringmann_2008, title={Dielectric layers
    for organic field effect transistors as gate dielectric and surface passivation},
    volume={205}, DOI={<a href="https://doi.org/10.1002/pssa.200723406">10.1002/pssa.200723406</a>},
    number={3}, journal={physica status solidi (a)}, publisher={Wiley}, author={Diekmann,
    T. and Pannemann, C. and Hilleringmann, Ulrich}, year={2008}, pages={564–577}
    }'
  chicago: 'Diekmann, T., C. Pannemann, and Ulrich Hilleringmann. “Dielectric Layers
    for Organic Field Effect Transistors as Gate Dielectric and Surface Passivation.”
    <i>Physica Status Solidi (a)</i> 205, no. 3 (2008): 564–77. <a href="https://doi.org/10.1002/pssa.200723406">https://doi.org/10.1002/pssa.200723406</a>.'
  ieee: 'T. Diekmann, C. Pannemann, and U. Hilleringmann, “Dielectric layers for organic
    field effect transistors as gate dielectric and surface passivation,” <i>physica
    status solidi (a)</i>, vol. 205, no. 3, pp. 564–577, 2008, doi: <a href="https://doi.org/10.1002/pssa.200723406">10.1002/pssa.200723406</a>.'
  mla: Diekmann, T., et al. “Dielectric Layers for Organic Field Effect Transistors
    as Gate Dielectric and Surface Passivation.” <i>Physica Status Solidi (a)</i>,
    vol. 205, no. 3, Wiley, 2008, pp. 564–77, doi:<a href="https://doi.org/10.1002/pssa.200723406">10.1002/pssa.200723406</a>.
  short: T. Diekmann, C. Pannemann, U. Hilleringmann, Physica Status Solidi (a) 205
    (2008) 564–577.
date_created: 2023-01-24T12:13:48Z
date_updated: 2023-03-21T09:38:46Z
department:
- _id: '59'
doi: 10.1002/pssa.200723406
intvolume: '       205'
issue: '3'
keyword:
- Materials Chemistry
- Electrical and Electronic Engineering
- Surfaces
- Coatings and Films
- Surfaces and Interfaces
- Condensed Matter Physics
- Electronic
- Optical and Magnetic Materials
language:
- iso: eng
page: 564-577
publication: physica status solidi (a)
publication_identifier:
  issn:
  - 1862-6300
  - 1862-6319
publication_status: published
publisher: Wiley
status: public
title: Dielectric layers for organic field effect transistors as gate dielectric and
  surface passivation
type: journal_article
user_id: '20179'
volume: 205
year: '2008'
...
---
_id: '1762'
author:
- first_name: D.
  full_name: Nau, D.
  last_name: Nau
- first_name: A.
  full_name: Schönhardt, A.
  last_name: Schönhardt
- first_name: A.
  full_name: Christ, A.
  last_name: Christ
- first_name: Thomas
  full_name: Zentgraf, Thomas
  id: '30525'
  last_name: Zentgraf
  orcid: 0000-0002-8662-1101
- first_name: Ch.
  full_name: Bauer, Ch.
  last_name: Bauer
- first_name: J.
  full_name: Kuhl, J.
  last_name: Kuhl
- first_name: H.
  full_name: Giessen, H.
  last_name: Giessen
citation:
  ama: Nau D, Schönhardt A, Christ A, et al. Optical properties of disordered metallic
    photonic crystal slabs. <i>physica status solidi (a)</i>. 2007;204(11):3848-3861.
    doi:<a href="https://doi.org/10.1002/pssa.200776411">10.1002/pssa.200776411</a>
  apa: Nau, D., Schönhardt, A., Christ, A., Zentgraf, T., Bauer, C., Kuhl, J., &#38;
    Giessen, H. (2007). Optical properties of disordered metallic photonic crystal
    slabs. <i>Physica Status Solidi (A)</i>, <i>204</i>(11), 3848–3861. <a href="https://doi.org/10.1002/pssa.200776411">https://doi.org/10.1002/pssa.200776411</a>
  bibtex: '@article{Nau_Schönhardt_Christ_Zentgraf_Bauer_Kuhl_Giessen_2007, title={Optical
    properties of disordered metallic photonic crystal slabs}, volume={204}, DOI={<a
    href="https://doi.org/10.1002/pssa.200776411">10.1002/pssa.200776411</a>}, number={11},
    journal={physica status solidi (a)}, publisher={Wiley-Blackwell}, author={Nau,
    D. and Schönhardt, A. and Christ, A. and Zentgraf, Thomas and Bauer, Ch. and Kuhl,
    J. and Giessen, H.}, year={2007}, pages={3848–3861} }'
  chicago: 'Nau, D., A. Schönhardt, A. Christ, Thomas Zentgraf, Ch. Bauer, J. Kuhl,
    and H. Giessen. “Optical Properties of Disordered Metallic Photonic Crystal Slabs.”
    <i>Physica Status Solidi (A)</i> 204, no. 11 (2007): 3848–61. <a href="https://doi.org/10.1002/pssa.200776411">https://doi.org/10.1002/pssa.200776411</a>.'
  ieee: D. Nau <i>et al.</i>, “Optical properties of disordered metallic photonic
    crystal slabs,” <i>physica status solidi (a)</i>, vol. 204, no. 11, pp. 3848–3861,
    2007.
  mla: Nau, D., et al. “Optical Properties of Disordered Metallic Photonic Crystal
    Slabs.” <i>Physica Status Solidi (A)</i>, vol. 204, no. 11, Wiley-Blackwell, 2007,
    pp. 3848–61, doi:<a href="https://doi.org/10.1002/pssa.200776411">10.1002/pssa.200776411</a>.
  short: D. Nau, A. Schönhardt, A. Christ, T. Zentgraf, C. Bauer, J. Kuhl, H. Giessen,
    Physica Status Solidi (A) 204 (2007) 3848–3861.
date_created: 2018-03-23T13:08:34Z
date_updated: 2022-01-06T06:53:16Z
department:
- _id: '15'
- _id: '230'
doi: 10.1002/pssa.200776411
intvolume: '       204'
issue: '11'
page: 3848-3861
publication: physica status solidi (a)
publication_identifier:
  issn:
  - 1862-6300
  - 1862-6319
publication_status: published
publisher: Wiley-Blackwell
status: public
title: Optical properties of disordered metallic photonic crystal slabs
type: journal_article
user_id: '30525'
volume: 204
year: '2007'
...
---
_id: '8623'
author:
- first_name: S.
  full_name: Hövel, S.
  last_name: Hövel
- first_name: N. C.
  full_name: Gerhardt, N. C.
  last_name: Gerhardt
- first_name: C.
  full_name: Brenner, C.
  last_name: Brenner
- first_name: M. R.
  full_name: Hofmann, M. R.
  last_name: Hofmann
- first_name: F.-Y.
  full_name: Lo, F.-Y.
  last_name: Lo
- first_name: Dirk
  full_name: Reuter, Dirk
  id: '37763'
  last_name: Reuter
- first_name: A. D.
  full_name: Wieck, A. D.
  last_name: Wieck
- first_name: E.
  full_name: Schuster, E.
  last_name: Schuster
- first_name: W.
  full_name: Keune, W.
  last_name: Keune
citation:
  ama: Hövel S, Gerhardt NC, Brenner C, et al. Spin-controlled LEDs and VCSELs. <i>physica
    status solidi (a)</i>. 2007:500-507. doi:<a href="https://doi.org/10.1002/pssa.200673219">10.1002/pssa.200673219</a>
  apa: Hövel, S., Gerhardt, N. C., Brenner, C., Hofmann, M. R., Lo, F.-Y., Reuter,
    D., … Keune, W. (2007). Spin-controlled LEDs and VCSELs. <i>Physica Status Solidi
    (A)</i>, 500–507. <a href="https://doi.org/10.1002/pssa.200673219">https://doi.org/10.1002/pssa.200673219</a>
  bibtex: '@article{Hövel_Gerhardt_Brenner_Hofmann_Lo_Reuter_Wieck_Schuster_Keune_2007,
    title={Spin-controlled LEDs and VCSELs}, DOI={<a href="https://doi.org/10.1002/pssa.200673219">10.1002/pssa.200673219</a>},
    journal={physica status solidi (a)}, author={Hövel, S. and Gerhardt, N. C. and
    Brenner, C. and Hofmann, M. R. and Lo, F.-Y. and Reuter, Dirk and Wieck, A. D.
    and Schuster, E. and Keune, W.}, year={2007}, pages={500–507} }'
  chicago: Hövel, S., N. C. Gerhardt, C. Brenner, M. R. Hofmann, F.-Y. Lo, Dirk Reuter,
    A. D. Wieck, E. Schuster, and W. Keune. “Spin-Controlled LEDs and VCSELs.” <i>Physica
    Status Solidi (A)</i>, 2007, 500–507. <a href="https://doi.org/10.1002/pssa.200673219">https://doi.org/10.1002/pssa.200673219</a>.
  ieee: S. Hövel <i>et al.</i>, “Spin-controlled LEDs and VCSELs,” <i>physica status
    solidi (a)</i>, pp. 500–507, 2007.
  mla: Hövel, S., et al. “Spin-Controlled LEDs and VCSELs.” <i>Physica Status Solidi
    (A)</i>, 2007, pp. 500–07, doi:<a href="https://doi.org/10.1002/pssa.200673219">10.1002/pssa.200673219</a>.
  short: S. Hövel, N.C. Gerhardt, C. Brenner, M.R. Hofmann, F.-Y. Lo, D. Reuter, A.D.
    Wieck, E. Schuster, W. Keune, Physica Status Solidi (A) (2007) 500–507.
date_created: 2019-03-26T10:14:15Z
date_updated: 2022-01-06T07:03:57Z
department:
- _id: '15'
- _id: '230'
doi: 10.1002/pssa.200673219
language:
- iso: eng
page: 500-507
publication: physica status solidi (a)
publication_identifier:
  issn:
  - 1862-6300
  - 1862-6319
publication_status: published
status: public
title: Spin-controlled LEDs and VCSELs
type: journal_article
user_id: '42514'
year: '2007'
...
---
_id: '39969'
author:
- first_name: Heinz-Siegfried
  full_name: Kitzerow, Heinz-Siegfried
  id: '254'
  last_name: Kitzerow
- first_name: A.
  full_name: Lorenz, A.
  last_name: Lorenz
- first_name: H.
  full_name: Matthias, H.
  last_name: Matthias
citation:
  ama: Kitzerow H-S, Lorenz A, Matthias H. Tuneable photonic crystals obtained by
    liquid crystal infiltration. <i>physica status solidi (a)</i>. 2007;204(11):3754-3767.
    doi:<a href="https://doi.org/10.1002/pssa.200776404">10.1002/pssa.200776404</a>
  apa: Kitzerow, H.-S., Lorenz, A., &#38; Matthias, H. (2007). Tuneable photonic crystals
    obtained by liquid crystal infiltration. <i>Physica Status Solidi (a)</i>, <i>204</i>(11),
    3754–3767. <a href="https://doi.org/10.1002/pssa.200776404">https://doi.org/10.1002/pssa.200776404</a>
  bibtex: '@article{Kitzerow_Lorenz_Matthias_2007, title={Tuneable photonic crystals
    obtained by liquid crystal infiltration}, volume={204}, DOI={<a href="https://doi.org/10.1002/pssa.200776404">10.1002/pssa.200776404</a>},
    number={11}, journal={physica status solidi (a)}, publisher={Wiley}, author={Kitzerow,
    Heinz-Siegfried and Lorenz, A. and Matthias, H.}, year={2007}, pages={3754–3767}
    }'
  chicago: 'Kitzerow, Heinz-Siegfried, A. Lorenz, and H. Matthias. “Tuneable Photonic
    Crystals Obtained by Liquid Crystal Infiltration.” <i>Physica Status Solidi (a)</i>
    204, no. 11 (2007): 3754–67. <a href="https://doi.org/10.1002/pssa.200776404">https://doi.org/10.1002/pssa.200776404</a>.'
  ieee: 'H.-S. Kitzerow, A. Lorenz, and H. Matthias, “Tuneable photonic crystals obtained
    by liquid crystal infiltration,” <i>physica status solidi (a)</i>, vol. 204, no.
    11, pp. 3754–3767, 2007, doi: <a href="https://doi.org/10.1002/pssa.200776404">10.1002/pssa.200776404</a>.'
  mla: Kitzerow, Heinz-Siegfried, et al. “Tuneable Photonic Crystals Obtained by Liquid
    Crystal Infiltration.” <i>Physica Status Solidi (a)</i>, vol. 204, no. 11, Wiley,
    2007, pp. 3754–67, doi:<a href="https://doi.org/10.1002/pssa.200776404">10.1002/pssa.200776404</a>.
  short: H.-S. Kitzerow, A. Lorenz, H. Matthias, Physica Status Solidi (a) 204 (2007)
    3754–3767.
date_created: 2023-01-25T11:24:41Z
date_updated: 2023-01-25T11:25:26Z
department:
- _id: '313'
- _id: '230'
- _id: '638'
doi: 10.1002/pssa.200776404
intvolume: '       204'
issue: '11'
keyword:
- Materials Chemistry
- Electrical and Electronic Engineering
- Surfaces
- Coatings and Films
- Surfaces and Interfaces
- Condensed Matter Physics
- Electronic
- Optical and Magnetic Materials
language:
- iso: eng
page: 3754-3767
publication: physica status solidi (a)
publication_identifier:
  issn:
  - 1862-6300
  - 1862-6319
publication_status: published
publisher: Wiley
status: public
title: Tuneable photonic crystals obtained by liquid crystal infiltration
type: journal_article
user_id: '254'
volume: 204
year: '2007'
...
---
_id: '39759'
author:
- first_name: Heinz-Siegfried
  full_name: Kitzerow, Heinz-Siegfried
  id: '254'
  last_name: Kitzerow
- first_name: A.
  full_name: Lorenz, A.
  last_name: Lorenz
- first_name: H.
  full_name: Matthias, H.
  last_name: Matthias
citation:
  ama: Kitzerow H-S, Lorenz A, Matthias H. Tuneable photonic crystals obtained by
    liquid crystal infiltration. <i>physica status solidi (a)</i>. 2007;204(11):3754-3767.
    doi:<a href="https://doi.org/10.1002/pssa.200776404">10.1002/pssa.200776404</a>
  apa: Kitzerow, H.-S., Lorenz, A., &#38; Matthias, H. (2007). Tuneable photonic crystals
    obtained by liquid crystal infiltration. <i>Physica Status Solidi (a)</i>, <i>204</i>(11),
    3754–3767. <a href="https://doi.org/10.1002/pssa.200776404">https://doi.org/10.1002/pssa.200776404</a>
  bibtex: '@article{Kitzerow_Lorenz_Matthias_2007, title={Tuneable photonic crystals
    obtained by liquid crystal infiltration}, volume={204}, DOI={<a href="https://doi.org/10.1002/pssa.200776404">10.1002/pssa.200776404</a>},
    number={11}, journal={physica status solidi (a)}, publisher={Wiley}, author={Kitzerow,
    Heinz-Siegfried and Lorenz, A. and Matthias, H.}, year={2007}, pages={3754–3767}
    }'
  chicago: 'Kitzerow, Heinz-Siegfried, A. Lorenz, and H. Matthias. “Tuneable Photonic
    Crystals Obtained by Liquid Crystal Infiltration.” <i>Physica Status Solidi (a)</i>
    204, no. 11 (2007): 3754–67. <a href="https://doi.org/10.1002/pssa.200776404">https://doi.org/10.1002/pssa.200776404</a>.'
  ieee: 'H.-S. Kitzerow, A. Lorenz, and H. Matthias, “Tuneable photonic crystals obtained
    by liquid crystal infiltration,” <i>physica status solidi (a)</i>, vol. 204, no.
    11, pp. 3754–3767, 2007, doi: <a href="https://doi.org/10.1002/pssa.200776404">10.1002/pssa.200776404</a>.'
  mla: Kitzerow, Heinz-Siegfried, et al. “Tuneable Photonic Crystals Obtained by Liquid
    Crystal Infiltration.” <i>Physica Status Solidi (a)</i>, vol. 204, no. 11, Wiley,
    2007, pp. 3754–67, doi:<a href="https://doi.org/10.1002/pssa.200776404">10.1002/pssa.200776404</a>.
  short: H.-S. Kitzerow, A. Lorenz, H. Matthias, Physica Status Solidi (a) 204 (2007)
    3754–3767.
date_created: 2023-01-24T19:06:15Z
date_updated: 2023-01-24T19:06:42Z
department:
- _id: '313'
- _id: '638'
doi: 10.1002/pssa.200776404
intvolume: '       204'
issue: '11'
keyword:
- Materials Chemistry
- Electrical and Electronic Engineering
- Surfaces
- Coatings and Films
- Surfaces and Interfaces
- Condensed Matter Physics
- Electronic
- Optical and Magnetic Materials
language:
- iso: eng
page: 3754-3767
publication: physica status solidi (a)
publication_identifier:
  issn:
  - 1862-6300
  - 1862-6319
publication_status: published
publisher: Wiley
status: public
title: Tuneable photonic crystals obtained by liquid crystal infiltration
type: journal_article
user_id: '254'
volume: 204
year: '2007'
...