---
_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'
...