Xuan Liang
(National Institute for Materials Science
)
;
Kazunari Yamaura
(National Institute for Materials Science
)
;
Alexei A. Belik
(National Institute for Materials Science
)
Description:
(abstract)Cation order, which can be controlled by synthesis conditions and stoichiometry, plays an important role in properties of perovskite materials. Here we show that aliovalent doping by Sb5+ in Sm2MnMn(Mn4-xSbx)O12 quadruple perovskite solid solutions can control cation orders in both A and B sites. Samples with 0.4 <= x <= 2 were synthesized by a high-pressure, high-temperature method at 6 GPa and 1770 K. Three regions with different cation orders were found at 0.5 <= x <= 1.0, x = 1.5–1.6, and x = 1.8. The 0.5 <= x <= 1.0 compositions have a B-site-disordered and A-site columnar-ordered structure with space group P42/nmc; the x = 1.5 and 1.6 samples have a B-site rock-salt-ordered and A-site columnar-ordered structure with space group P42/n; the x = 1.8 sample has a B-site rock-salt-ordered and A-site-disordered structure with space group P21/n. All the samples show one ferrimagnetic transition: TC increases from 35 K to 73 K for 0.5 <= x <= 1.0, TC = 81 K for x = 1.5 and 1.6, and TC = 53 K for x = 1.8.
Rights:
Keyword: A-site columnar-ordered perovskites, high-pressure, crystal structures, ferrimagnets
Date published: 2024-07-19
Publisher: Wiley
Journal:
Funding:
Manuscript type: Publisher's version (Version of record)
MDR DOI:
First published URL: https://doi.org/10.1002/chem.202401960
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Updated at: 2024-07-24 08:30:21 +0900
Published on MDR: 2024-07-24 08:30:22 +0900
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Chemistry A European J-V30- e202401960-Sm2MnMnMn4-xSbxO12.pdf
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Size | 9.6 MB | Detail |
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Chemistry A European J - 2024 - Liang - Three Perovskite Phases with Different Cation Orders in Sm2MnMn Mn4 xSbx O12 ESI.pdf
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application/pdf |
Size | 9.59 MB | Detail |