Strain glass versus antisite disorder induced ferromagnetic state in Fe doped Ni–Mn–In Heusler martensites

Fe doping in Ni 2 Mn 1.5 In 0.5 results in suppression of the martensitic phase via two contrasting routes. In Ni 2 Mn 1.5 −  x Fe x In 0.5 , the martensitic phase is converted to a strain glassy phase, while in Ni 2 −  y Fe y Mn 1.5 In 0.5 , a cubic ferromagnetic phase results at the expense of the...

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Bibliographic Details
Published in:Journal of physics. D, Applied physics Applied physics, 2021-05, Vol.54 (18), p.185002
Main Authors: Nevgi, R, Priolkar, K R, Acet, M
Format: Article
Language:English
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Summary:Fe doping in Ni 2 Mn 1.5 In 0.5 results in suppression of the martensitic phase via two contrasting routes. In Ni 2 Mn 1.5 −  x Fe x In 0.5 , the martensitic phase is converted to a strain glassy phase, while in Ni 2 −  y Fe y Mn 1.5 In 0.5 , a cubic ferromagnetic phase results at the expense of the martensite. Careful studies of magnetic and structural properties reveal the presence of the impurity γ -(Fe,Ni) phase as the reason for the emergence of non-ergodic strain glassy phase when Fe is sought to be doped at Y/Z (Mn) sites of X 2 YZ Heusler alloy. Whereas attempts to dope Fe in the X (Ni) sublattice result in an A2 type antisite disorder that promotes a ferromagnetic ground state.
ISSN:0022-3727
1361-6463
DOI:10.1088/1361-6463/abe3b0