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  Crystal and magnetic structure of antiferromagnetic Mn2PtPd

Kumar, V., Reehuis, M., Hoser, A., Adler, P., & Felser, C. (2018). Crystal and magnetic structure of antiferromagnetic Mn2PtPd. Journal of Physics: Condensed Matter, 30(26): 265803, pp. 1-6. doi:10.1088/1361-648X/aac6fb.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-7B13-0 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-7E96-9
Genre: Journal Article

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 Creators:
Kumar, Vivek1, Author              
Reehuis, Manfred2, Author
Hoser, Andreas2, Author
Adler, Peter3, Author              
Felser, Claudia4, Author              
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2External Organizations, ou_persistent22              
3Peter Adler, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863435              
4Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Abstract: We have investigated the crystal and magnetic structure of Mn 2 PtPd alloy using powder x-ray and neutron diffraction experiments. This compound is believed to belong to the Heusler family having crystal symmetry I 4/ mmm (TiAl 3 -type). However, in this work we found that the Pd and Pt atoms are disordered and thus Mn 2 PtPd crystallizes in the L 1 0 structure having P 4/ mmm symmetry (CuAu-I type) like MnPt and MnPd binary alloys. The lattice constants are a   =  2.86 Å and c   =  3.62 Å at room temperature. Mn 2 PtPd has a collinear antiferromagnetic spin structure below the Néel temperature T N   =  866 K, where Mn moments of ~4 µ B lie in the ab -plane. We observed a strong change in the lattice parameters near T N . The sample exhibits metallic behaviour, where electrical resistivity and carrier concentration are of the order of 10 −5 Ω cm and 10 21 cm −3 , respectively.

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Language(s): eng - English
 Dates: 2018-06-082018-06-08
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1088/1361-648X/aac6fb
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Title: Journal of Physics: Condensed Matter
Source Genre: Journal
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Publ. Info: Bristol : IOP Publishing
Pages: - Volume / Issue: 30 (26) Sequence Number: 265803 Start / End Page: 1 - 6 Identifier: ISSN: 0953-8984
CoNE: /journals/resource/954928562478