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  A-site Mn2+ tuned magnetism and electrical transport properties in the transition-metal-only perovskite oxide MnCu3Mn4O12

Guo, J., Wang, S., Li, W., Lu, D., Ye, X., Liu, Z., et al. (2022). A-site Mn2+ tuned magnetism and electrical transport properties in the transition-metal-only perovskite oxide MnCu3Mn4O12. Physical Review B, 105(5): 054409, pp. 1-7. doi:10.1103/PhysRevB.105.054409.

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 Creators:
Guo, Jia1, Author
Wang, Suyun1, Author
Li, Wenmin1, Author
Lu, Dabiao1, Author
Ye, Xubin1, Author
Liu, Zhehong1, Author
Qin, Shijun1, Author
Wang, Xiao1, Author
Hu, Zhiwei2, Author              
Lin, Hong-Ji1, Author
Chen, Chien-Te1, Author
Wan, Jianguo1, Author
Zhang, Qinfang1, 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              

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 Abstract: An AA(3)'B4O12-type transition-metal-only quadruple perovskite oxide MnCu3Mn4O12 was prepared by high-pressure and high-temperature methods. The compound has a cubic Im-3 symmetry with charge distribution of Mn2+Cu32+Mn44+O12. A long-range ferrimagnetic phase transition caused by Cu2+(up arrow)Mn4+(down arrow) spin interaction is found to occur at a Curie temperature T-C approximate to 365 K . Different from the isostructural compound CaCu3Mn4O12, the susceptibility of MnCu3Mn4O12 experiences a second anomaly similar to 200 K due to the effects of A-site Mn2+ spin ordering. Moreover, the A-site Mn2+ spins also considerably decrease the magnitude of resistivity. Theoretical calculations reveal that the A-site Mn 3d orbitals locate near the Fermi level and hybridize with the Cu 3d and O 2p orbitals, playing a crucial role on the magnetic and electrical transport properties of MnCu3Mn4O12. In this paper, we provide an interesting example using A-site magnetic ions to significantly tune the physical properties in AA(3)'B4O12-type quadruple perovskite oxides.

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Language(s): eng - English
 Dates: 2022-02-102022-02-10
 Publication Status: Published in print
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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 105 (5) Sequence Number: 054409 Start / End Page: 1 - 7 Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008