Large Magnetoelectric Coupling Near Room Temperature in Synthetic Melanostibite Mn2 FeSbO6

Multiferroic materials exhibit two or more ferroic orders and have potential applications as multifunctional materials in the electronics industry. A coupling of ferroelectricity and ferromagnetism is hereby particularly promising. We show that the synthetic melanostibite mineral Mn2 FeSbO6 (R3‾ spa...

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Published in:Angewandte Chemie International Edition 2017-04, Vol.56 (16), p.4438-4442
Main Authors: Dos Santos-García, Antonio J, Solana-Madruga, Elena, Ritter, Clemens, Andrada-Chacón, Adrián, Sánchez-Benítez, Javier, Mompean, Federico J, Garcia-Hernandez, Mar, Sáez-Puche, Regino, Schmidt, Rainer
Format: Article
Language:English
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Summary:Multiferroic materials exhibit two or more ferroic orders and have potential applications as multifunctional materials in the electronics industry. A coupling of ferroelectricity and ferromagnetism is hereby particularly promising. We show that the synthetic melanostibite mineral Mn2 FeSbO6 (R3‾ space group) with ilmenite-type structure exhibits cation off-centering that results in alternating modulated displacements, thus allowing antiferroelectricity to occur. Massive magnetoelectric coupling (MEC) and magnetocapacitance effect of up to 4000 % was detected at a record high temperature of 260 K. The multiferroic behavior is based on the imbalance of cationic displacements caused by a magnetostrictive mechanism, which sets up an unprecedented example to pave the way for the development of highly effective MEC devices operational at or near room temperature.
ISSN:1521-3773
DOI:10.1002/anie.201609762