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Intrinsic Triple Order in A-site Columnar-Ordered Quadruple Perovskites: Proof of Concept
| Title: | Intrinsic Triple Order in A-site Columnar-Ordered Quadruple Perovskites: Proof of Concept |
| Authors: | Belik, Alexei A. Browse this author | | Khalyavin, Dmitry D. Browse this author | | Zhang, Lei Browse this author | | Matsushita, Yoshitaka Browse this author | | Katsuya, Yoshio Browse this author | | Tanaka, Masahiko Browse this author | | Johnson, Roger D. Browse this author | | Yamaura, Kazunari Browse this author →KAKEN DB |
| Keywords: | high-pressure chemistry | | materials science | | perovskite phases |
| Issue Date: | 5-Oct-2018 |
| Publisher: | Wiley-Blackwell |
| Journal Title: | ChemPhysChem |
| Volume: | 19 |
| Issue: | 19 |
| Start Page: | 2449 |
| End Page: | 2452 |
| Publisher DOI: | 10.1002/cphc.201800593 |
| Abstract: | There is an emerging topic in the science of perovskite materials: A-site columnar-ordered A(2)A'A '' B4O12 quadruple perovskites, which have an intrinsic triple order at the A sites. However, in many examples reported so far, A and A cations are the same, and the intrinsic triple order is hidden. Here, we investigate structural properties of Dy2CuMnMn4O12 (1) and Ho2MnGaMn4O12 (2) by neutron and X-ray powder diffraction and prove the triple order at the A sites. The cation distributions determined are [Ho-2](A)[Mn](A)[Ga0.66Mn0.34](A)[Mn3.66Ga0.34](B)O-12 and [Dy-2](A)[Cu0.73Mn0.27](A)[Mn0.80Dy0.20](A)[Mn1.89Cu0.11](B1)[Mn-2](B2)O-12. There are clear signatures of Jahn-Teller distortions in 1 and 2, and the orbital pattern is combined with an original type of charge ordering in 1. Columnar-ordered quadruple perovskites represent a new playground to study complex interactions between different electronic degrees of freedom. No long-range magnetic order was found in 2 by neutron diffraction, and its magnetic properties in low fields are dominated by an impurity with negative magnetization or magnetization reversal. On the other hand, 1 shows three magnetic transitions at 21, 125, and 160K. |
| Rights: | This is the peer reviewed version of the following article: A. A. Belik, D. D. Khalyavin, L. Zhang, Y. Matsushita, Y. Katsuya, M. Tanaka, R. D. Johnson, K. Yamaura, ChemPhysChem 2018, 19, 2449, which has been published in final form at https://doi.org/10.1002/cphc.201800593. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/75724 |
| Appears in Collections: | 総合化学院 (Graduate School of Chemical Sciences and Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 山浦 一成
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