Perpendicular magnetic anisotropy in nanocomposite Nd-Fe-B/FeCo bilayer films

被引：2

作者：

Ao, Q ^{[1
]}

Zhang, WL ^{[1
]}

Wu, JS ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Dept Mat Sci & Engn, Key Lab State Educ Minist High Temperature Mat &, Shanghai 200030, Peoples R China

来源：

SCRIPTA MATERIALIA | 2005年 / 52卷 / 12期

基金：

上海市自然科学基金; 中国国家自然科学基金;

关键词：

perpendicular magnetic anisotropy; nanocomposite Nd-Fe-B/FeCo bilayer films; exchange coupling; sputtering;

D O I：

10.1016/j.scriptamat.2005.02.030

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Nd-Fe-B/FeCo bilayer films with Mo underlayers and overlayers have been investigated. All the samples have perpendicular anisotropy and the magnetization is found to increase with increasing FeCo layer thickness (d(FeCo)) and the coercivity decreases with increasing d(FeCo). The maximum energy-product is 20 MGOe for d(FeCo) = 5 nm. The enhancement of the remanence and energy products in the bilayer films is attributed to the exchange coupling between the magnetically soft and hard phases. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

收藏

页码：1247 / 1251

页数：5

相关论文

共 28 条

[11] NEW NANOCRYSTALLINE HIGH-REMANENCE ND-FE-B ALLOYS BY RAPID SOLIDIFICATION [J].

MANAF, A ;

BUCKLEY, RA ;

DAVIES, HA .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1993, 128 (03) :302-306

[12] Magnetic properties of NdFeB thin films on platinum underlayers [J].

Mapps, DJ ;

Chandrasekhar, R ;

OGrady, K ;

Cambridge, J ;

Long, AP ;

Doole, R .

IEEE TRANSACTIONS ON MAGNETICS, 1997, 33 (05) :3007-3009

[13]

McCurrie R.A., 1994, FERROMAGNETIC MAT ST

[14] Remanence enhancement due to exchange coupling in multilayers of hard- and softmagnetic phases [J].

Parhofer, SM ;

Wecker, J ;

Kuhrt, C ;

Gieres, G ;

Schultz, L .

IEEE TRANSACTIONS ON MAGNETICS, 1996, 32 (05) :4437-4439

[15] Synthesis of Nd-Fe-B thin films with high coercive force by cosputtering [J].

Piramanayagam, SN ;

Matsumoto, M ;

Morisako, A ;

Takei, S .

IEEE TRANSACTIONS ON MAGNETICS, 1997, 33 (05) :3643-3645

[16] 2-DIMENSIONAL AND 3-DIMENSIONAL CALCULATION OF REMANENCE ENHANCEMENT OF RARE-EARTH BASED COMPOSITE MAGNETS (INVITED) [J].

SCHREFL, T ;

FISCHER, R ;

FIDLER, J ;

KRONMULLER, H .

JOURNAL OF APPLIED PHYSICS, 1994, 76 (10) :7053-7058

[17] REMANENCE AND COERCIVITY IN ISOTROPIC NANOCRYSTALLINE PERMANENT-MAGNETS [J].

SCHREFL, T ;

FIDLER, J ;

KRONMULLER, H .

PHYSICAL REVIEW B, 1994, 49 (09) :6100-6110

[18] Structure and magnetic properties of high coercive NdFeB films with a perpendicular anisotropy [J].

Serrona, LKEB ;

Sugimura, A ;

Adachi, N ;

Okuda, T ;

Ohsato, H ;

Sakamoto, I ;

Nakanishi, A ;

Motokawa, M ;

Ping, DH ;

Hono, K .

APPLIED PHYSICS LETTERS, 2003, 82 (11) :1751-1753

[19] Magnetic properties of exchange-coupled alpha-Fe/Nd-Fe-B multilayer thin-film magnets [J].

Shindo, M ;

Ishizone, M ;

Sakuma, A ;

Kato, H ;

Miyazaki, T .

JOURNAL OF APPLIED PHYSICS, 1997, 81 (08) :4444-4446

[20] GIANT ENERGY PRODUCT IN NANOSTRUCTURED 2-PHASE MAGNETS [J].

SKOMSKI, R ;

COEY, JMD .

PHYSICAL REVIEW B, 1993, 48 (21) :15812-15816