Phase evaluation, magnetic, and electric properties of Mn60+xGa40-x (x=0-15) ribbons

被引：13

作者：

Feng, J. N. ^{[1
]}

Zhao, X. G. ^{[1
,2
]}

Ning, X. K. ^{[1
]}

Shih, C. W. ^{[2
]}

Chang, W. C. ^{[2
]}

Ma, S. ^{[1
]}

Liu, W. ^{[1
]}

Zhang, Z. D. ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China

[2] Natl Chung Cheng Univ, Dept Phys, Chiayi 62102, Taiwan

来源：

JOURNAL OF APPLIED PHYSICS | 2014年 / 115卷 / 17期

基金：

国家高技术研究发展计划(863计划);

关键词：

SOLIDIFICATION; COERCIVITY; MN3GA;

D O I：

10.1063/1.4868081

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Mn60+xGa40-x (x = 0, 5, 10, and 15) ribbons were prepared by the melt-spinning technique and subsequently by a heat treatment at 673 K for 1 h. The magnetic phases Mn8Ga5, Mn1.86Ga, D0(19)-Mn3Ga, and D0(22)-Mn3Ga are found to appear in these annealed melt-spun ribbons. The Curie temperature T-C of the ribbons varies from 125 K to 185 K as x changes from 0 to 5. For x = 10, the hexagonal structure of the D0(19)-Mn3Ga phase is distorted to an orthorhombic one below the phase transition temperature T-d = 185 K. The optimized values for coercivity at room temperature are 0.13, 4.4, 8.1, and 7.7 kOe for the ribbons with x = 0, 5, 10, and 15, respectively. The resistance measurements indicate that the ribbons show a typical metallic behavior for x = 5-15. (C) 2014 AIP Publishing LLC.

引用

页数：3

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