Stable magnetostructural coupling with tunable magnetoresponsive effects in hexagonal ferromagnets

Enke Liu, Wenhong Wang (), Lin Feng, Wei Zhu, Guijiang Li, Jinglan Chen, Hongwei Zhang, Guangheng Wu, Chengbao Jiang, Huibin Xu and Frank de Boer
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Enke Liu: State Key Laboratory for Magnetism, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
Wenhong Wang: State Key Laboratory for Magnetism, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
Lin Feng: State Key Laboratory for Magnetism, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
Wei Zhu: State Key Laboratory for Magnetism, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
Guijiang Li: State Key Laboratory for Magnetism, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
Jinglan Chen: State Key Laboratory for Magnetism, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
Hongwei Zhang: State Key Laboratory for Magnetism, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
Guangheng Wu: State Key Laboratory for Magnetism, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
Chengbao Jiang: School of Materials Science and Engineering, Beihang University
Huibin Xu: School of Materials Science and Engineering, Beihang University
Frank de Boer: Van der Waals-Zeeman Instituut, Universiteit van Amsterdam

Nature Communications, 2012, vol. 3, issue 1, 1-10

Abstract: Abstract The magnetostructural coupling between the structural and the magnetic transition has a crucial role in magnetoresponsive effects in a martensitic-transition system. A combination of various magnetoresponsive effects based on this coupling may facilitate the multifunctional applications of a host material. Here we demonstrate the feasibility of obtaining a stable magnetostructural coupling over a broad temperature window from 350 to 70 K, in combination with tunable magnetoresponsive effects, in MnNiGe:Fe alloys. The alloy exhibits a magnetic-field-induced martensitic transition from paramagnetic austenite to ferromagnetic martensite. The results indicate that stable magnetostructural coupling is accessible in hexagonal phase-transition systems to attain the magnetoresponsive effects with broad tunability.

Date: 2012
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DOI: 10.1038/ncomms1868

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