First-principles prediction of enhanced magnetic anisotropy in FeCo alloys

被引：28

作者：

Wu, Dangxin ^{[1
]}

Zhang, Qiming ^{[1
]}

Liu, J. Ping ^{[1
]}

Yuan, Dingwang ^{[2
]}

Wu, Ruqian ^{[2
]}

机构：

[1] Univ Texas Arlington, Dept Phys, Arlington, TX 76019 USA

[2] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 05期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.2840721

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The structural, electronic, and magnetic properties of FeCo alloys were studied by first-principles calculations. It has been found that the alloys prefer chemically noncubic geometries in a wide composition range. This produces appreciable uniaxial magnetic anisotropy, which facilitates interphase magnetic interaction and enhances the overall magnetization in exchange-coupled nanocomposite systems. Large magnetostrictive coefficients provide another venue for manipulations of magnetic anisotropy energies. (c) 2008 American Institute of Physics.

引用

页数：3

共 20 条

[11] DENSITY-FUNCTIONAL APPROXIMATION FOR THE CORRELATION-ENERGY OF THE INHOMOGENEOUS ELECTRON-GAS [J].

PERDEW, JP .

PHYSICAL REVIEW B, 1986, 33 (12) :8822-8824

[12] Energy barrier and magnetic properties of exchange-coupled hard-soft bilayer [J].

Shan, ZS ;

Liu, JP ;

Chakka, VM ;

Zeng, H ;

Jiang, JS .

IEEE TRANSACTIONS ON MAGNETICS, 2002, 38 (05) :2907-2909

[13] ALIGNED 2-PHASE MAGNETS - PERMANENT MAGNETISM OF THE FUTURE (INVITED) [J].

SKOMSKI, R .

JOURNAL OF APPLIED PHYSICS, 1994, 76 (10) :7059-7064

[14]

SKOMSKI R, 1996, IEEE T MAGN, V30, P607

[15]

SKOMSKI R, 1993, PHYS REV B, V48, P864

[16] Torque method for the theoretical determination of magnetocrystalline anisotropy [J].

Wang, XD ;

Wu, RQ ;

Wang, DS ;

Freeman, AJ .

PHYSICAL REVIEW B, 1996, 54 (01) :61-64

[17] TOTAL-ENERGY ALL-ELECTRON DENSITY FUNCTIONAL METHOD FOR BULK SOLIDS AND SURFACES [J].

WEINERT, M ;

WIMMER, E ;

FREEMAN, AJ .

PHYSICAL REVIEW B, 1982, 26 (08) :4571-4578

[18] FULL-POTENTIAL SELF-CONSISTENT LINEARIZED-AUGMENTED-PLANE-WAVE METHOD FOR CALCULATING THE ELECTRONIC-STRUCTURE OF MOLECULES AND SURFACES - O2 MOLECULE [J].

WIMMER, E ;

KRAKAUER, H ;

WEINERT, M ;

FREEMAN, AJ .

PHYSICAL REVIEW B, 1981, 24 (02) :864-875

[19] Perpendicular magnetic anisotropy induced by tetragonal distortion of FeCo alloy films grown on Pd(001) [J].

Winkelmann, Aimo ;

Przybylski, Marek ;

Luo, Feng ;

Shi, Yisheng ;

Barthel, Jochen .

PHYSICAL REVIEW LETTERS, 2006, 96 (25)

[20] Spin-orbit induced magnetic phenomena in bulk metals and their surfaces and interfaces [J].

Wu, RQ ;

Freeman, AJ .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 200 (1-3) :498-514

← 1 2 →