Magnetoresistance and its relation to magnetization in Ni50Mn35Sn15 shape-memory epitaxial films

被引：28

作者：

Dubowik, J. ^{[1
]}

Zaleski, K. ^{[1
]}

Goscianska, I. ^{[2
]}

Glowinski, H. ^{[1
]}

Ehresmann, A. ^{[3
,4
]}

机构：

[1] Polish Acad Sci, Inst Mol Phys, PL-60179 Poznan, Poland

[2] Adam Mickiewicz Univ, Dept Phys, PL-61614 Poznan, Poland

[3] Univ Kassel, Dept Phys, D-34132 Kassel, Germany

[4] Univ Kassel, Ctr Interdisciplinary Nanostruct Sci & Technol CI, D-34132 Kassel, Germany

来源：

APPLIED PHYSICS LETTERS | 2012年 / 100卷 / 16期

关键词：

magnesium compounds; magnetic epitaxial layers; magnetisation; magnetocaloric effects; magnetoresistance; manganese alloys; martensitic transformations; metallic epitaxial layers; nickel alloys; shape memory effects; tin alloys; PHASE-TRANSITIONS; ALLOYS; RESISTIVITY; METALS;

D O I：

10.1063/1.4704562

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The magnetoresistance (MR) of Heusler alloy Ni50Mn35Sn15 epitaxial films on MgO substrates is studied as a function of temperature T and magnetic field H. The large negative MR extends over martensitic transformation with maximum of -22% at 110 K. In martensitic and austenitic phase, the MR is -3% and -5%, respectively. We show that the MR is governed mainly by magnetization paraprocess at high magnetic fields and scales as the square of magnetization Delta m(H, T)(2). (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4704562]

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