Magnetic and transport properties of tetragonal- or cubic-Heusler-type Co-substituted Mn-Ga epitaxial thin films

被引：21

作者：

Kubota, T. ^{[1
]}

Ouardi, S. ^{[2
]}

Mizukami, S. ^{[1
]}

Fecher, G. H. ^{[2
]}

Felser, C. ^{[2
]}

Ando, Y. ^{[3
]}

Miyazaki, T. ^{[1
]}

机构：

[1] Tohoku Univ, WPI Adv Inst Mat Res, Sendai, Miyagi 9808577, Japan

[2] Max Planck Inst Chem Phys Solids, Dept Inorgan Chem, D-01187 Dresden, Germany

[3] Tohoku Univ, Grad Sch Engn, Sendai, Miyagi 9808579, Japan

来源：

JOURNAL OF APPLIED PHYSICS | 2013年 / 113卷 / 17期

关键词：

D O I：

10.1063/1.4799143

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The composition dependence of the structural, magnetic, and transport properties of epitaxially grown Mn-Co-Ga films were investigated. The crystal structure was observed to change from tetragonal to cubic as the Co content was increased. In terms of the dependence of saturation magnetization on the Co content, relatively small value was obtained for the Mn2.3Co0.4Ga1.3 film at a large K-u value of 9.2 Merg/cm(3). Electrical resistivity of Mn-Co-Ga films was larger than that of pure Mn-Ga film. The maximum value of the resistivity was 490 mu Omega cm for Mn2.2Co0.6Ga1.2 film. The high resistivity of Mn-Co-Ga might be due to the presence of localized electron states in the films due to chemical disordering caused by the Co substitution. (C) 2013 American Institute of Physics.

引用

页数：3

共 19 条

[1] Tuning the magnetism of the Heusler alloys Mn3-xCoxGa from soft and half-metallic to hard-magnetic for spin-transfer torque applications [J].