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  Strong enhancement of spin ordering by A-site magnetic ions in the ferrimagnet CaCu3Fe2Os2O12

Deng, H., Liu, M., Dai, J., Hu, Z., Kuo, C., Yin, Y., et al. (2016). Strong enhancement of spin ordering by A-site magnetic ions in the ferrimagnet CaCu3Fe2Os2O12. Physical Review B, 94(2): 024414, pp. 1-8. doi:10.1103/PhysRevB.94.024414.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-246A-F Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-ACE7-5
Genre: Journal Article

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 Creators:
Deng, Hongshan1, Author
Liu, Min1, Author
Dai, Jianhong1, Author
Hu, Zhiwei2, Author              
Kuo, Changyang3, Author              
Yin, Yunyu1, Author
Yang, Junye1, Author
Wang, Xiao1, Author
Zhao, Qing1, Author
Xu, Yuanji1, Author
Fu, Zhaoming1, Author
Cai, Jianwang1, Author
Guo, Haizhong1, Author
Jin, Kuijuan1, Author
Pi, Tunwen1, Author
Soo, Yunliang1, Author
Zhou, Guanghui1, Author
Cheng, Jinguang1, Author
Chen, Kai1, Author
Ohresser, Philippe1, Author
Yang, Yi-feng1, AuthorJin, Changqing1, AuthorTjeng, Liu-Hao4, Author              Long, Youwen1, Author more..
Affiliations:
1External Organizations, ou_persistent22              
2Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863461              
3Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863445              
4Liu Hao Tjeng, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863452              

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 Abstract: ABO(3) perovskite is a kind of very important functional material with versatile physical properties. Although B-site chemical substitution with various magnetic ions has been widely investigated, the A-site doping with magnetic transition metal is little known. Here we report AA'3B2B'(2) O-12-type A-and B-site ordered ferrimagnet CaCu3Fe2Os2O12 with magnetic transition metals occupying three different atomic sites (A', B, and B' sites). This compound is synthesized by a special high-pressure annealing process. It possesses a much higher Curie temperature T-C of 580 K compared with that of the B-site-only ordered Ca2FeOsO6 (T-C = 320 K) without magnetic ion at the A site. First-principles numerical calculations reveal that this enhancement primarily originates from the additional spin interaction between the A'-site Cu2+ and the B'-site Os5+, generating a strong Cu2+(up arrow)Fe3+(up arrow)Os5+(down arrow) ferrimagnetic spin coupling. This work opens up an alternative way for enhancing the spin ordering temperature by introducing A-site magnetic ions.

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Language(s): eng - English
 Dates: 2016-07-122016-07-12
 Publication Status: Published in print
 Pages: -
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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: 94 (2) Sequence Number: 024414 Start / End Page: 1 - 8 Identifier: ISSN: 1098-0121
CoNE: /journals/resource/954925225008