Magnetic hardening in SmCox-Co multilayers and nanocomposites

被引：51
作者：
Liu, JP [1 ]
Liu, Y
Skomski, R
Sellmyer, DJ
机构：
[1] Univ Nebraska, Behlen Lab Phys, Lincoln, NE 68588 USA
[2] Univ Nebraska, Ctr Mat Res & Anal, Lincoln, NE 68588 USA
[3] Univ Nebraska, Dept Mech Engn, Lincoln, NE 68588 USA
来源：
JOURNAL OF APPLIED PHYSICS | 1999年 / 85卷 / 08期
关键词：
D O I：
10.1063/1.370490
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
SmCox-Co (x=3.5, 4, and 5) nanostructured multilayers have been prepared by dc and rf sputtering. Magnetic hardening has been found in the as-deposited thin films. The effects of the Co and hard-phase layer thicknesses and the effect of the Cr underlayer have been studied. Further magnetic hardening has been achieved by heat treating the samples. A remarkable increase of the coercivity has been obtained in the nanocomposite films, with coercive force up to 40 kOe. Transmission electron microscopy, atomic force microscopy, and magnetic force microscopy observations have been performed to understand the nanostructure and the domain structure. (C) 1999 American Institute of Physics. [S0021-8979(99)61208-7].
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收藏
页码：4812 / 4814
页数：3
相关论文
共 11 条
[1]   MELTSPUN PERMANENT-MAGNET MATERIALS CONTAINING FE3B AS THE MAIN PHASE [J].
COEHOORN, R ;
DEMOOIJ, DB ;
DEWAARD, C .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1989, 80 (01) :101-104
[2]   High coercivity, epitaxial Sm-Co films with uniaxial in-plane anisotropy [J].
Fullerton, EE ;
Jiang, JS ;
Rehm, C ;
Sowers, CH ;
Bader, SD ;
Patel, JB ;
Wu, XZ .
APPLIED PHYSICS LETTERS, 1997, 71 (11) :1579-1581
[3]   Structure and magnetic properties of exchange-spring Sm-Co/Co superlattices [J].
Fullerton, EE ;
Jiang, JS ;
Sowers, CH ;
Pearson, JE ;
Bader, SD .
APPLIED PHYSICS LETTERS, 1998, 72 (03) :380-382
[4]   High energy products in rapidly annealed nanoscale Fe/Pt multilayers [J].
Liu, JP ;
Luo, CP ;
Liu, Y ;
Sellmyer, DJ .
APPLIED PHYSICS LETTERS, 1998, 72 (04) :483-485
[5]   Remanence enhancement and exchange coupling in PrCo/Co films [J].
Liu, JP ;
Liu, Y ;
Shan, ZS ;
Sellmyer, DJ .
IEEE TRANSACTIONS ON MAGNETICS, 1997, 33 (05) :3709-3711
[6]   Mechanically alloyed nanocomposite magnets (invited) [J].
McCormick, PG ;
Miao, WF ;
Smith, PAI ;
Ding, J ;
Street, R .
JOURNAL OF APPLIED PHYSICS, 1998, 83 (11) :6256-6261
[7]   Interaction domains in isotropic, fine-grained Sm2Fe17N3 permanent magnets [J].
Rave, W ;
Eckert, D ;
Schafer, R ;
Gebel, B ;
Muller, KH .
IEEE TRANSACTIONS ON MAGNETICS, 1996, 32 (05) :4362-4364
[8]   Electronic structure and magnetic properties of hard/soft multilayers [J].
Sabiryanov, RF ;
Jaswal, SS .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1998, 177 :989-990
[9]   REMANENCE AND COERCIVITY IN ISOTROPIC NANOCRYSTALLINE PERMANENT-MAGNETS [J].
SCHREFL, T ;
FIDLER, J ;
KRONMULLER, H .
PHYSICAL REVIEW B, 1994, 49 (09) :6100-6110
[10]   MAGNETIC AND STRUCTURAL-PROPERTIES OF HIGH COERCIVITY NANOCRYSTALLINE COSM FILMS WITH INPLANE ANISOTROPY [J].
SELLMYER, DJ ;
SHAN, ZS ;
LIU, Y ;
LIOU, SH ;
MALHOTRA, SS ;
ROBERTSON, BW .
SCRIPTA METALLURGICA ET MATERIALIA, 1995, 33 (10-11) :1545-1552
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