Sigmalike phase and nanoscale segregation in polycrystalline FexCr1-x films:: An element-resolved magnetic and structural study

被引：24

作者：

Kortright, JB ^{[1
]}

Kim, SK ^{[1
]}

Ohldag, H ^{[1
]}

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA

来源：

PHYSICAL REVIEW B | 2000年 / 61卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.61.64

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Complex changes in room-temperature magnetic and chemical order in sputtered FexCr1-x films (1.0>x >0.24) are revealed by resonant soft x-ray magneto-optical and scattering spectroscopies. A distorted, homogeneous paramagnetic phase at x congruent to 0.55, similar to the bulk sigma phase, is found. Linked chemical and magnetic segregation on either side of this phase are interpreted in terms of favorable and frustrated exchange interactions, as is a net Cr local moment for X greater than or equal to 0.69. Segregated alloys exhibit reversible magnitization originating from weakly coupled, noncollinear Fe spins.

引用

页码：64 / 67

页数：4