Phonons and Relaxations in Unfilled Tetragonal Tungsten-Bronzes
Authors:
- Elena Buixaderas,
- Jan Dec
Abstract
The lead-free unfilled tetragonal tungsten-bronzes SBN and CBN are investigated by Raman, infrared and high-frequency dielectric spectroscopies. The substitution in the different channels affects phonons as well as relaxations. Relaxations in SBN show similar qualitative behaviour on increasing Sr content and relaxor behaviour, but for the extreme relaxor samples all characteristic frequencies are higher with stronger contribution to the permittivity in the GHz-THz range is stronger. The presence of a soft anharmonic central mode in the THz range together with the slowing down of a relaxation from GHz to MHz ranges reveals the coexistence of displacive and order-disorder scenarios for the ferroelectric phase transition in this family.
- Record ID
- USL169cd731e6b64d0f81cf7cb506763390
- Author
- Pages
- 281-308
- Book
- Saint-Gregoire Pierre, Pierre Saint-Gregoire Smirnov Mikhail Mikhail Smirnov (eds.): Perovskites and other framework structure crystalline materials : (2D - perovskites, Aurivillius, Ruddlesden-Popper, Dion-Jacobson phases, tungsten bronzes, clays, and others), 2021, [b.m.], Independently published, ISBN 979-8-583-09649-7
- Keywords in English
- phonons; dielectric response; ferroelectric oxides; relaxor materials; tetragonal tungsten-bronzes
- DOI
- DOI:10.23647/ca.md20202108 Opening in a new tab
- Handle.net URL
- hdl.handle.net/20.500.12128/23343 Opening in a new tab
- URL
- http://www.co-ac.com/caip/index.php/materialsanddevices/article/download/92/70 Opening in a new tab
- Language
- eng (en) English
- License
- File
-
- File: 1
- Phonons and Relaxations in Unfilled Tetragonal Tungsten-Bronzes, File Buixaderas_Phonons_and_Relaxations_in_Unfilled_Tetragonal.pdf / 4 MB
- Buixaderas_Phonons_and_Relaxations_in_Unfilled_Tetragonal.pdf
- publication date: 06-02-2024
- Phonons and Relaxations in Unfilled Tetragonal Tungsten-Bronzes, File Buixaderas_Phonons_and_Relaxations_in_Unfilled_Tetragonal.pdf / 4 MB
-
- Score (nominal)
- 5
- Score source
- publisherList
- Score
- = 5.0, 09-08-2023, MonographChapterAuthor
- Publication indicators
- = 1
- Citation count
- 1
- Uniform Resource Identifier
- https://opus.us.edu.pl/info/article/USL169cd731e6b64d0f81cf7cb506763390/
- URN
urn:uni-kat-prod:USL169cd731e6b64d0f81cf7cb506763390
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.