Can the ferroelectric soft mode trigger an antiferromagnetic phase transition?
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F23%3A00570671" target="_blank" >RIV/68378271:_____/23:00570671 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.jeurceramsoc.2022.12.067" target="_blank" >https://doi.org/10.1016/j.jeurceramsoc.2022.12.067</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jeurceramsoc.2022.12.067" target="_blank" >10.1016/j.jeurceramsoc.2022.12.067</a>
Alternative languages
Result language
angličtina
Original language name
Can the ferroelectric soft mode trigger an antiferromagnetic phase transition?
Original language description
Type-II multiferroics, where spin interactions induce a ferroelectric polarization, are interesting due to large magnetoelectric coupling. We report on a new type of multiferroicity in the quadruple-perovskite BiMn3Cr4O12, where an antiferromagnetic phase is induced by the structural change at the ferroelectric phase transition. The displacive nature of the ferroelectric phase transition at 125 K, with a crossover to an order-disorder mechanism, is evidenced by a polar soft phonon in the THz range and a central mode. Dielectric and pyroelectric studies show that the ferroelectric critical temperature corresponds to the previously reported Néel temperature of the Cr3+ spins. An increase in ferroelectric polarization is observed below 48 K, coinciding with the Néel temperature of the Mn3+ spins. This increase in polarization is attributed to an enhanced magnetoelectric coupling, as no change in the crystal symmetry below 48 K is detected from infrared and Raman spectra.
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
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of the European Ceramic Society
ISSN
0955-2219
e-ISSN
1873-619X
Volume of the periodical
43
Issue of the periodical within the volume
6
Country of publishing house
GB - UNITED KINGDOM
Number of pages
9
Pages from-to
2479-2487
UT code for WoS article
000935687800001
EID of the result in the Scopus database
2-s2.0-85145723998