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  From antiferromagnetism to high-Tc weak ferromagnetism manipulated by atomic rearrangement in Ba3NiOs2O9

Feng, H. L., Chen, J., Hu, Z., Wang, X., Reehuis, M., Adler, P., et al. (2020). From antiferromagnetism to high-Tc weak ferromagnetism manipulated by atomic rearrangement in Ba3NiOs2O9. Physical Review Materials, 4(6): 064420, pp. 1-9. doi:10.1103/PhysRevMaterials.4.064420.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-CAFD-A Version Permalink: http://hdl.handle.net/21.11116/0000-0006-CAFF-8
Genre: Journal Article

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 Creators:
Feng, Hai L.1, Author              
Chen, Jie2, Author
Hu, Zhiwei3, Author              
Wang, Xiao1, Author              
Reehuis, Manfred2, Author
Adler, Peter4, Author              
Hoser, Andreas2, Author
Wu, Mei-Xia2, Author
Agrestini, Stefano5, Author              
Vasili, Hari Babu2, Author
Herrero-Martin, J.2, Author
Nataf, Lucie2, Author
Baudelet, Francois2, Author
Chen, Kai2, Author
Matsushita, Yoshitaka2, Author
Li, Man-Rong2, Author
Tjeng, Liu Hao6, Author              
Felser, Claudia7, Author              
Jansen, Martin8, Author              
Yamaura, Kazunari2, Author
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              
4Peter Adler, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863435              
5Stefano Agrestini, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863459              
6Liu Hao Tjeng, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863452              
7Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              
8Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              

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 Abstract: Polycrystalline samples of Ba3NiOs2O9 were synthesized at ambient pressure (AP) and high pressure (HP) conditions, respectively. Both samples are electrically semiconducting. The AP Ba3NiOs2O9 crystallizes in the 6 H perovskite structure with space group P6(3)/mmc , consisting of face-sharing Os2O9 dimer units and corner-sharing NiO6 octahedra. Magnetic measurements indicated that AP Ba3NiOs2O9 is antiferromagnetically ordered below 130 K. HP Ba3NiOs2O9 crystallizes in the 6H perovskite structure too, but the face-sharing octahedral sites appear to be occupied by both Ni2+ and Os5+ ions, whereas the corner-sharing site is occupied exclusively by Os5+ . HP Ba3NiOs2O9 undergoes a high-temperature (approximate to 400 K) weak ferromagnetic transition, which is much different from the antiferromagnetism of the AP phase. The long-range magnetic order of HP Ba3NiOs2O9 was confirmed by neutron powder diffraction. X-ray magnetic circular dichroism analysis supported ferromagnetic coupling between Os and Ni moments which leads to a spin arrangement, where the ferromagnetic moments mainly arise from Ni2+ ions.

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Language(s): eng - English
 Dates: 2020
 Publication Status: Published online
 Pages: -
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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: 4 (6) Sequence Number: 064420 Start / End Page: 1 - 9 Identifier: ISSN: 2475-9953
CoNE: https://pure.mpg.de/cone/journals/resource/2475-9953