Origin of steps in magnetization loops of martensitic Ni-Mn-Ga films on MgO(001) | Zendy

А. I. Laptev | Zendy; Kristof M. Lebecki | Zendy; G. Welker | Zendy; Yuansu Luo | Zendy; K. Samwer | Zendy; M. Fonin | Zendy

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Origin of steps in magnetization loops of martensitic Ni-Mn-Ga films on MgO(001)

Author(s) -

А. I. Laptev,

Kristof M. Lebecki,

G. Welker,

Yuansu Luo,

K. Samwer,

M. Fonin

Publication year - 2016

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.4963264

Subject(s) - magnetization , condensed matter physics , materials science , martensite , alloy , phase (matter) , magnetic shape memory alloy , epitaxy , magnetic anisotropy , metallurgy , microstructure , magnetic field , nanotechnology , chemistry , physics , organic chemistry , layer (electronics) , quantum mechanics

We study the temperature dependent magnetization properties of (010)-oriented Ni-Mn-Ga epitaxial films on MgO(001) substrates. In the martensitic phase, we observe pronounced abrupt slope changes in the magnetization loops for all studied samples. Our experimental findings are discussed in conjunction with the micromagnetic simulations, revealing that the characteristic magnetization behavior is governed solely by the magnetization switching within the specific martensitic variant pattern, and no reorientation of twin variants is involved in the process. Our study emphasizes the important role of the magnetostatic interactions in the magnetization behavior of magnetic shape memory alloy thin films.Web of Science10913art. no. 13240

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