Coexisting polarization mechanisms in the ferroelectric uniaxial tetragonal tungsten bronze Ca0.3Ba0.7Nb2O6
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00598557" target="_blank" >RIV/68378271:_____/24:00598557 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0356371" target="_blank" >https://hdl.handle.net/11104/0356371</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.110.104302" target="_blank" >10.1103/PhysRevB.110.104302</a>
Alternative languages
Result language
angličtina
Original language name
Coexisting polarization mechanisms in the ferroelectric uniaxial tetragonal tungsten bronze Ca0.3Ba0.7Nb2O6
Original language description
Using a broad band dielectric spectroscopy approach (1 to 10^14 Hz) we prove that the tungsten bronze Ca0.3Ba0.7Nb2O6 (CBN-30) displays a ferroelectric phase transition of mixed displacive and order-disorder character, and its paraelectric phase does not show traces of relaxor behaviour but precursor effects as polar fluctuations below about 550 K. The analysis of the sub-MHz dielectric response together with infrared and Raman spectroscopy reveals that simultaneous polarization mechanisms are responsible for the phase transition. The comparison of the excitations found in CBN-30 with those of (Sr,Ba)Nb2O6 reveals that these mechanisms are congruous, although in CBN-30 the main relaxation process behaves differently due to the different domain structure.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
<a href="/en/project/EH22_008%2F0004591" target="_blank" >EH22_008/0004591: Ferroic Multifunctionalities</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review B
ISSN
2469-9950
e-ISSN
2469-9969
Volume of the periodical
110
Issue of the periodical within the volume
10
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
104302
UT code for WoS article
001310225000015
EID of the result in the Scopus database
2-s2.0-85203324427