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  Room-temperature ferrimagnetism of anti-site-disordered Ca2MnOsO6

Feng, H. L., Ghimire, M. P., Hu, Z., Liao, S.-C., Agrestini, S., Chen, J., et al. (2019). Room-temperature ferrimagnetism of anti-site-disordered Ca2MnOsO6. Physical Review Materials, 3(12): 124404, pp. 1-11. doi:10.1103/PhysRevMaterials.3.124404.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-6D04-D Version Permalink: http://hdl.handle.net/21.11116/0000-0005-6D07-A
Genre: Journal Article

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 Creators:
Feng, Hai L.1, Author              
Ghimire, Madhav Prasad2, Author
Hu, Zhiwei3, Author              
Liao, Sheng-Chieh1, Author              
Agrestini, Stefano4, Author              
Chen, Jie2, Author
Yuan, Yahua2, Author
Matsushita, Yoshitaka2, Author
Tsujimoto, Yoshihiro2, Author
Katsuya, Yoshio2, Author
Tanaka, Masahiko2, Author
Lin, Hong-Ji2, Author
Chen, Chien-Te2, Author
Weng, Shih-Chang2, Author
Valvidares, Manuel2, Author
Chen, Kai2, Author
Baudelet, Francois2, Author
Tanaka, Arata2, Author
Greenblatt, Martha2, Author
Tjeng, Liu Hao5, Author              
Yamaura, Kazunari2, Author more..
Affiliations:
1Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863445              
2External Organizations, ou_persistent22              
3Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863461              
4Stefano Agrestini, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863459              
5Liu Hao Tjeng, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863452              

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 Abstract: Room-temperature ferrimagnetism was discovered for the anti-site-disordered perovskite Ca2MnOsO6 with T-c = 305 K. Ca2MnOsO6 crystallizes into an orthorhombic structure with a space group of Pnma, in which Mn and Os share the oxygen-coordinated-octahedral site at an equal ratio without a noticeable ordered arrangement. The material is electrically semiconducting with variable-range-hopping behavior. X-ray absorption spectroscopy confirmed the trivalent state of the Mn and the pentavalent state of the Os. X-ray magnetic circular dichroism spectroscopy reveals that the Mn and Os magnetic moments are aligned antiferromagnetically, thereby classifying the material as a ferrimagnet which is in accordance with band structure calculations. It is intriguing that the magnetic signal of the Os is very weak, and that the observed total magnetic moment is primarily due to the Mn. The T-c = 305 K is the second highest in the material category of so-called disordered ferromagnets such as CaRu1-xMnxO3, SrRu1-xCrxO3, and CaIr1-xMnxO3, and hence, may support the development of spintronic oxides with relaxed requirements concerning the anti-site disorder of the magnetic ions.

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Language(s): eng - English
 Dates: 2019-12-162019-12-16
 Publication Status: Published in print
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Title: Physical Review Materials
  Abbreviation : Phys. Rev. Mat.
Source Genre: Journal
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Publ. Info: College Park, MD : American Physical Society
Pages: - Volume / Issue: 3 (12) Sequence Number: 124404 Start / End Page: 1 - 11 Identifier: ISSN: 2475-9953
CoNE: https://pure.mpg.de/cone/journals/resource/2475-9953