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説明:

Multiferroic materials with ordered electric dipoles and magnetic spins attract a lot of attention from viewpoints of applications and fundamental science. Multiferroics are generally classified into type-I, where (anti)ferroelectric and magnetic transitions are well separated and have completely different origins, and type-II, where magnetic structures break crystallographic inversion symmetry. Type-III multiferroics were recently introduced, which are close to type-I, but they do not show non-polar-to-polar structural transitions as polar structures are fixed by chemical order. In this work, we describe dielectric and magnetic behaviors observed in the double perovskites, (Ca0.5Mn1.5)MnWO6 and (Ca0.3Mn1.7)MnWO6, crystallizing in space group P21/n. Dielectric constant of these compounds showed a peak at TC = 22 K and TC = 27 K, respectively, and followed the Curie-Weiss law in wide temperature ranges between TC and 300 K, where TC is an (anti)ferroelectric transition temperature – this behavior is typical for type-I multiferroics with proper (anti)ferroelectric transitions. At the same time, TC matches with the Neel temperature TN – this behavior is typical for type-II multiferroics. Therefore, materials with such behavior can be called hybrid multiferroics.

権利情報:

• In Copyright
  This document is the Accepted Manuscript version of a Published Work that appeared in final form in The Journal of Physical Chemistry Letters, copyright © 2024 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.chemmater.4c01720

キーワード: double perovskites, multiferroics, Curie-Weiss, dielectric properties

刊行年月日: 2024-08-13

出版者: American Chemical Society (ACS)

掲載誌:

• CHEMISTRY OF MATERIALS (ISSN: 15205002) p. 7604-7609

研究助成金:

• Kazuchika Okura Memorial Foundation 2022-11
• Japan Society for the Promotion of Science JP22H04601

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.4663

公開URL: https://doi.org/10.1021/acs.chemmater.4c01720

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更新時刻: 2025-08-13 08:30:23 +0900

MDRでの公開時刻: 2025-08-13 08:17:18 +0900