Can the ferroelectric soft mode trigger an antiferromagnetic phase transition?

Alves Maia, André Filipe; Kadlec, Christelle; Savinov, Maxim; Vilarinho, R.; Moreira, J.A.; Bovtun, Viktor; Kempa, Martin; Míšek, Martin; Kaštil, Jiří; Prokhorov, Andriy; Maňák, Jan; Belik, A.A.; Kamba, Stanislav

doi:https://dx.doi.org/10.1016/j.jeurceramsoc.2022.12.067

Number of the records: 1

Can the ferroelectric soft mode trigger an antiferromagnetic phase transition?

1.

SYSNO ASEP	0570671
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Can the ferroelectric soft mode trigger an antiferromagnetic phase transition?
Author(s)	Alves Maia, André Filipe (FZU-D)_ORCID Kadlec, Christelle (FZU-D)_{RID, ORCID} Savinov, Maxim (FZU-D)_{RID, ORCID} Vilarinho, R. (PT) Moreira, J.A. (PT) Bovtun, Viktor (FZU-D)_{RID, ORCID, SAI} Kempa, Martin (FZU-D)_{RID, ORCID} Míšek, Martin (FZU-D)_{RID, ORCID} Kaštil, Jiří (FZU-D)_{RID, ORCID} Prokhorov, Andriy (FZU-D)_ORCID Maňák, Jan (FZU-D)_ORCID Belik, A.A. (JP) Kamba, Stanislav (FZU-D)_{RID, ORCID, SAI}
Number of authors	13
Source Title	Journal of the European Ceramic Society. - : Elsevier - ISSN 0955-2219 Roč. 43, č. 6 (2023), s. 2479-2487
Number of pages	9 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	multiferroics ; perovskites ; soft-modes ; ferroelectrics
Subject RIV	BM - Solid Matter Physics ; Magnetism
OECD category	Condensed matter physics (including formerly solid state physics, supercond.)
R&D Projects	GA21-06802S GA ČR - Czech Science Foundation (CSF)
	EF16_019/0000760 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
	LM2018096 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Method of publishing	Open access with time embargo (01.06.2025)
Institutional support	FZU-D - RVO:68378271
UT WOS	000935687800001
EID SCOPUS	85145723998
DOI	10.1016/j.jeurceramsoc.2022.12.067
Annotation	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.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2024
Electronic address	https://doi.org/10.1016/j.jeurceramsoc.2022.12.067

Number of the records: 1