Shell-ferromagnetism in Ni-Mn-based Heuslers in view of ductile Ni-Mn-Al

Çakir, Asli; Acet, Mehmet LSF

The present work deals with magnetic and structural phase instabilities in Ni-Mn-based Heusler alloys especially Ni-Mn-Al. The temper-annealed Ni50Mn45Al5 Heusler alloy decomposes into the full stoichiometric Ni2MnAl and NiMn phases. The decomposed stoichiometric Heusler forms precipitates in an anti-ferromagnetic NiMn matrix and exhibits shell-ferromagnetic properties when the temper-annealing is performed under magnetic field. The shell-ferromagnetism results from the magnetic proximity effect and is observed as vertically shifted magnetization loops. The presence of this property in Ni50Mn45Al5 adds the possibility of having a ductile material while preserving the shell-ferromagnetic properties.

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Çakir, A., Acet, M., 2018. Shell-ferromagnetism in Ni-Mn-based Heuslers in view of ductile Ni-Mn-Al. https://doi.org/10.1063/1.4975792
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