Magnetic properties and phase stability of half-metal-type Co2Cr1-xFexGa alloys

被引：24

作者：

Kobayashi, K

Umetsu, RY

Fujita, A

Oikawa, K

Kainuma, R

Fukamichi, K

Ishida, K

机构：

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

[2] Natl Inst Adv Ind Sci & Technol, Miyagino Ku, Sendai, Miyagi 9838551, Japan

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

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2005年 / 399卷 / 1-2期

关键词：

magnetic moment; L2(1)-type phase; order-disorder transition; spintronic devices;

D O I：

10.1016/j.jallcom.2005.03.037

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The magnetic properties and phase stability of half-metal-type Co2Cr1-xFexGa alloys were investigated by differential scanning calorimetry (DSC), in a superconducting quantum interference device (SQUID) magnetometer and in a vibrating sample magnetometer (VSM), and by transmission electron microscopy (TEM). It was found that the L2(1)-type single-phase is obtainable for the entire concentration of x and that the value of the saturation magnetic moment M., at 4.2 K in the lower composition range of x is in agreement with the generalized Slater-Pauling line, while it is rather larger than the generalized Slater-Pauling line above x = 0.6. The Curie temperature T-c monotonically increases, whereas the transition temperature from the L2(1)- to B2-type phase T-1(B2/L21) is almost constant at 1082 +/- 13 K with increasing x. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：60 / 63

页数：4

共 23 条

[1] Large negative magnetoresi stance effects in Co2Cr0.6Fe0.4Al [J].