Open AccessCoexistence of magnetic and electric orderings in a divalent Cr2+-based multiaxial molecular ferroelectric
Author(s) -
Yong Ai,
Rong Sun,
YuLing Zeng,
Junchao Liu,
YuanYuan Tang,
BingWu Wang,
Zheming Wang,
Song Gao,
RenGen Xiong
Publication year - 2021
Publication title -
chemical science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.687
H-Index - 172
eISSN - 2041-6539
pISSN - 2041-6520
DOI - 10.1039/d1sc01871j
Subject(s) - multiferroics , ferroelectricity , antiferromagnetism , magnetism , materials science , phase transition , condensed matter physics , dielectric , ferromagnetism , perovskite (structure) , crystallography , chemistry , physics , optoelectronics
Multiferroic materials have attracted great interest because of their underlying new science and promising applications in data storage and mutual control devices. However, they are still very rare and highly imperative to be developed. Here, we report an organic-inorganic hybrid perovskite trimethylchloromethylammonium chromium chloride (TMCM-CrCl 3 ), showing the coexistence of magnetic and electric orderings. It displays a paraelectric-ferroelectric phase transition at 397 K with an Aizu notation of 6/ mFm , and spin-canted antiferromagnetic ordering with a Néel temperature of 4.8 K. The ferroelectricity originates from the orientational ordering of TMCM cations, and the magnetism is from the [CrCl 3 ] - framework. Remarkably, TMCM-CrCl 3 is the first experimentally confirmed divalent Cr 2+ -based multiferroic material as far as we know. A new category of hybrid multiferroic materials is pointed out in this work, and more Cr 2+ -based multiferroic materials will be expectedly developed in the future.