Enhancement of L21 order and spin-polarization of Heusler alloy Co2MnSi thin film by Ag alloying

被引：5

作者：

Bosu, S. ^{[1
]}

Sakuraba, Y. ^{[1
]}

Sasaki, T. T. ^{[1
]}

Li, S. ^{[1
]}

Hono, K. ^{[1
]}

机构：

[1] Natl Inst Mat Sci, Tsukuba, Ibaraki, Japan

来源：

SCRIPTA MATERIALIA | 2016年 / 110卷

关键词：

L2(1)-order; Heusler alloys; Half-metal; Ag-alloying; CPP-GMR; HALF-METALLICITY;

D O I：

10.1016/j.scriptamat.2015.08.003

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We report enhancement of L2(1) order and the resultant improvement of spin polarization of Co2MnSi (CMS) Heusler alloy thin films by a small amount of Ag alloying (x(Ag) <= 4.5 atomic (at.) %). The degree of L2(1) order in CMS increases with x(Ag)(=2.7 at.% and 4.5 at.%), which shows a positive correlation with the magnitude of negative anisotropic magnetoresistance ratio, suggesting the enhancement of spin polarization. Since the benefit of Ag-doping was confirmed even at low annealing temperature around 350 degrees C, this method could be useful for processing spintronic devices using Heusler alloys at relatively low annealing or substrate temperature. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：70 / 73

页数：4