Structural and magnetic properties, and electronic structures of Fe-Mn-Ga alloys

被引：4

作者：

Kudryavtsev, Y. V. ^{[1
]}

Uvarov, N. V. ^{[1
]}

Iermolenko, V. N. ^{[1
]}

Dubowik, J. ^{[2
]}

Rhee, J. Y. ^{[3
]}

Yoo, Y. J. ^{[4
,5
]}

Lee, Y. P. ^{[4
,5
]}

机构：

[1] NAS Ukraine, Inst Met Phys, UA-03142 Kiev, Ukraine

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

[3] Sungkyunkwan Univ, Suwon, South Korea

[4] Hanyang Univ, Q Psi, Seoul 133791, South Korea

[5] Hanyang Univ, Dept Phys, Seoul 133791, South Korea

来源：

JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2013年 / 62卷 / 10期

关键词：

Phase stability; Electronic structures; Magnetic properties; OPTICAL-PROPERTIES; PHASE;

D O I：

10.3938/jkps.62.1508

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the structural and the magnetic investigations on bulk Fe-Mn-Ga alloy and the films with a stoichiometry of 1:1:1. Both the alloy and the films reveal an unstable crystallographic structure. While the bulk alloy appears to possess a mixed ferromagnetic hexagonal structure with the presence of a (Mn/Fe)(9)Ga-5 xi-phase, the films have ferromagnetic cubic phases in various types of structural ordering that depend on the deposition and the annealing conditions. Exchange bias and enhanced coercivity occur simultaneously in B2-type ordered FeMnGa films, revealing an exchange coupling between coexisting antiferromagnetic and ferromagnetic phases. The experimental results are compared with the results of the first-principle calculations.

引用

页码：1508 / 1513

页数：6

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