Thickness dependence of the magnetic properties of high-coercive Pr-Fe-B thin films with perpendicular magnetic anisotropy

被引：16

作者：

Yang, F. ^{[1
]}

Liu, W.

Cui, W. B.

Feng, J. N.

Zhang, Y. Q.

Zhang, Z. D.

机构：

[1] Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China

来源：

PHYSICA B-CONDENSED MATTER | 2008年 / 403卷 / 19-20期

基金：

中国国家自然科学基金;

关键词：

Pr2Fe14B; Thin films; Coercivity; Perpendicular anisotropy; Hysteresis loop; Domain wall;

D O I：

10.1016/j.physb.2008.06.013

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The magnetic properties of Pr-Fe-B films with perpendicular magnetic anisotropy have been studied as a function of thickness varying from 10 to 1200 nm. The crucial thickness for forming the Pr2Fe14B phase is estimated to be about 25 nm in our study, and the perpendicular anisotropy shows a trend to vanish for thick films. The coercivity of the films initially increases with increasing film thickness, gradually reaching a value which is near the value for bulk material. The magnetic domain size increases with increasing thickness. The surface morphology, the roughness and the domain structure of the films have been investigated by means of atomic-force microscopy and magnetic-force microscopy. (C) 2008 Elsevier B.V. All rights reserved.

引用

收藏

页码：3631 / 3634

页数：4

相关论文

共 16 条

[1] HIGH IHC PERPENDICULAR ANISOTROPY ND-FE-B SPUTTERED FILMS [J].

CADIEU, FJ ;

CHEUNG, TD ;

WICKRAMASEKARA, L ;

KAMPRATH, N .

IEEE TRANSACTIONS ON MAGNETICS, 1986, 22 (05) :752-754

[2] Studies on the effect of Cobalt and Titanium substitution in NdFeB thin films for magnetic recording media [J].

Chandrasekhar, R ;

Mapps, DJ ;

O'Grady, K ;

Cambridge, J ;

Petford-Long, A ;

Doole, R .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 196 :104-106

[3] Coercivity mechanism of anisotropic Pr2Fe14B thin films with perpendicular texture -: art. no. 224419 [J].

Chen, SL ;

Liu, W ;

Zhang, ZD .

PHYSICAL REVIEW B, 2005, 72 (22)

[4] Effects of buffer layer and substrate temperature on the surface morphology, the domain structure and magnetic properties of c-axis-oriented Nd2Fe14B films -: art. no. 033907 [J].

Chen, SL ;

Liu, W ;

Chen, CL ;

Zhang, ZD .

JOURNAL OF APPLIED PHYSICS, 2005, 98 (03)

[5] Effect of heat treatment on microstructure and magnetic properties of anisotropic Nd-Fe-B films with Mo or Ti buffer layer [J].

Chen, SL ;

Liu, W ;

Chen, CL ;

Zhang, ZD .

JOURNAL OF APPLIED PHYSICS, 2005, 98 (11)

[6] High performance hard magnetic NdFeB thick films for integration into micro-electro-mechanical systems [J].

Dempsey, N. M. ;

Walther, A. ;

May, F. ;

Givord, D. ;

Khlopkov, K. ;

Gutfleisch, O. .

APPLIED PHYSICS LETTERS, 2007, 90 (09)

[7] Magnetic and microstructural properties of nanocrystalline exchange coupled PrFeB permanent magnets [J].

Goll, D ;

Seeger, M ;

Kronmuller, H .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1998, 185 (01) :49-60

[8] High-coercivity, c-axis oriented Nd2Fe14B films grown by molecular beam epitaxy [J].

Keavney, DJ ;

Fullerton, EE ;

Pearson, JE ;

Bader, SD .

JOURNAL OF APPLIED PHYSICS, 1997, 81 (08) :4441-4443

[9] COERCIVITY MECHANISM OF SINTERED PR17FE75B8 AND PR17FE53B30 PERMANENT-MAGNETS [J].

KOU, XC ;

KRONMULLER, H ;

GIVORD, D ;

ROSSIGNOL, MF .

PHYSICAL REVIEW B, 1994, 50 (06) :3849-3860

[10] STRUCTURE AND MAGNETIC-PROPERTIES OF SPUTTERED ND-FE-B ALLOYS [J].

LINETSKY, YL ;

KORNILOV, NV .

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 1995, 4 (02) :188-195