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  High-pressure synthesis of A-site ordered perovskite CaMn3(Fe3Mn)O12 and sequential long-range antiferromagnetic ordering and spin glass transition

Guo, J., Ye, X., Liu, Z., Wang, W., Qin, S., Zhou, B., et al. (2019). High-pressure synthesis of A-site ordered perovskite CaMn3(Fe3Mn)O12 and sequential long-range antiferromagnetic ordering and spin glass transition. Journal of Solid State Chemistry, 278: 120921, pp. 1-5. doi:10.1016/j.jssc.2019.120921.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0004-9837-3 Version Permalink: http://hdl.handle.net/21.11116/0000-0004-983B-F
Genre: Journal Article

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 Creators:
Guo, Jia1, Author
Ye, Xubin1, Author
Liu, Zhehong1, Author
Wang, Weipeng1, Author
Qin, Shijun1, Author
Zhou, Bowen1, Author
Hu, Zhiwei2, Author              
Lin, Hong-Ji1, Author
Chen, Chien-Te1, Author
Yu, Richeng1, Author
Tjeng, Liu Hao3, Author              
Long, Youwen1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863461              
3Liu Hao Tjeng, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863452              

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Free keywords: Antiferromagnetism; Crystal structure; Glass; Glass transition; Iron compounds; Perovskite; Spin glass; X ray absorption spectroscopy; X rays, Antiferromagnetic phase transition; High-pressure synthesis; Mott variable-range hopping; Ordered perovskite; Soft x-ray absorption spectroscopies; Spin order; Strong electron correlations; Temperature-dependent resistivity, Manganese compounds
 Abstract: An AA’3B4O12-type perovskite oxide CaMn3(Fe3Mn)O12 was synthesized at 8 GPa and 1473 K. X-ray diffraction shows a cubic crystal structure with space group Im-3. The charge states are verified by soft x-ray absorption spectroscopy to be CaMn3+ 3(Fe3+ 3Mn4+)O12, where the Ca2+ and Mn3+ are 1:3 ordered respectively at A and A′ sites, while the Mn4+ and Fe3+ are disorderly distributed at B site. The spin interaction of A′-site Mn3+ ions causes a long-range antiferromagnetic phase transition at about 39 K. Subsequently, a spin glass transition is found to occur around 14 K due to the randomly distributed Fe3+ and Mn4+ at B site. Moreover, the spin glass behavior follows a dynamic scaling power law. The temperature dependent resistivity can be well fitted by a 3D Mott variable-range hopping model, indicating the insulating nature of CaMn3(Fe3Mn)O12 due to the strong electron correlation effects. © 2019 Elsevier Inc.

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Language(s): eng - English
 Dates: 2019-08-222019-08-22
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1016/j.jssc.2019.120921
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Title: Journal of Solid State Chemistry
Source Genre: Journal
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Publ. Info: Orlando, Fla. : Academic Press
Pages: - Volume / Issue: 278 Sequence Number: 120921 Start / End Page: 1 - 5 Identifier: ISSN: 0022-4596
CoNE: https://pure.mpg.de/cone/journals/resource/954922646045