Phase separation and magnetic properties of half-metal-type Co2Cr1-xFexAl alloys

被引：105

作者：

Kobayashi, K

Umetsu, RY

Kainuma, R

Ishida, K

Oyamada, T

Fujita, A

Fukamichi, K

机构：

[1] Tohoku Univ, Grad Sch Engn, Dept Mat Sci, Sendai, Miyagi 9808579, Japan

[2] Japan Sci & Technol Agcy, Core Res Evolut Sci & Technol, Tokyo, Japan

来源：

APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 20期

基金：

日本学术振兴会;

关键词：

D O I：

10.1063/1.1821654

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The phase stability and magnetic properties of the half-metal-type Co2Cr1-xFexAl alloy system were investigated. It was found that the occurrence of two-phase separation is unavoidable in a concentration range of less than x=0.4, leading to deviation of the saturation magnetic moments from the generalized Slater-Pauling line. The L2(1)-type phase becomes stable in a concentration range of more than x=0.7, where no half-metallic behaviors are present. Consequently, it is concluded that the most favorable concentration for applications to spintronic devices is located around x=0.4 in Co2Cr1-xFexAl alloys having the B2-type phase. (C) 2004 American Institute of Physics.

引用

页码：4684 / 4686

页数：3

共 24 条

[21]

Okamura S., 2004, Journal of the Magnetics Society of Japan, V28, P172, DOI 10.3379/jmsjmag.28.172

[22]

Picozzi S, 2002, PHYS REV B, V66, DOI 10.1103/PhysRevB.66.094421

[23] Magnetic properties and band structures of half-metal-type Co2CrGa Heusler alloy [J].

Umetsu, RY ;

Kobayashi, K ;

Kainuma, R ;

Fujita, A ;

Fukamichi, K ;

Ishida, K ;

Sakuma, A .

APPLIED PHYSICS LETTERS, 2004, 85 (11) :2011-2013

[24] Orbital angular momentum and interpretation of core-absorption magnetic circular dichroism on the band picture in Co-based Heusler alloys Co2YSn, (Y = Ti, Zr, and Nb) -: art. no. 104410 [J].

Yamasaki, A ;

Imada, S ;

Arai, R ;

Utsunomiya, H ;

Suga, S ;

Muro, T ;

Saitoh, Y ;

Kanomata, T ;

Ishida, S .

PHYSICAL REVIEW B, 2002, 65 (10) :1-6

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