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  Gradual pressure-induced change in the magnetic structure of the noncollinear antiferromagnet Mn3Ge

Sukhanov, A. S., Singh, S., Caron, L., Hansen, T., Hoser, A., Kumar, V., et al. (2018). Gradual pressure-induced change in the magnetic structure of the noncollinear antiferromagnet Mn3Ge. Physical Review B, 97(21): 214402, pp. 1-7. doi:10.1103/PhysRevB.97.214402.

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 Creators:
Sukhanov, A. S.1, Author           
Singh, Sanjay1, Author           
Caron, L.1, Author           
Hansen, Th2, Author
Hoser, A.2, Author
Kumar, V.1, Author           
Borrmann, H.3, Author           
Fitch, A.2, Author
Devi, P.1, Author           
Manna, K.1, Author           
Felser, C.4, Author           
Inosov, D. S.2, Author
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2External Organizations, ou_persistent22              
3Horst Borrmann, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863410              
4Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Abstract: By means of powder neutron diffraction we investigate changes in the magnetic structure of the coplanar noncollinear antiferromagnet Mn3Ge caused by an application of hydrostatic pressure up to 5 GPa. At ambient conditions the kagome layers of Mn atoms in Mn3Ge order in a triangular 120 degrees spin structure. Under high pressure the spins acquire a uniform out-of-plane canting, gradually transforming the magnetic texture to a noncoplanar configuration. With increasing pressure the canted structure fully transforms into the collinear ferromagnetic one. We observed that magnetic order is accompanied by a noticeable magnetoelastic effect, namely, spontaneous magnetostriction. The latter induces an in-plane magnetostrain of the hexagonal unit cell at ambient pressure and flips to an out-of-plane strain at high pressures in accordance with the change of the magnetic structure.

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Language(s): eng - English
 Dates: 2018-06-012018-06-01
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
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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: 97 (21) Sequence Number: 214402 Start / End Page: 1 - 7 Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008