In-cluster-structured exchange-coupled magnets with high energy densities

被引：25
作者：
Rui, X.
Shield, J. E. [1 ]
Sun, Z.
Xu, Y.
Sellmyer, D. J.
机构：
[1] Univ Nebraska, Dept Mech Engn, Lincoln, NE 68588 USA
[2] Univ Nebraska, Nebraska Ctr Mat & Nanosci, Lincoln, NE 68588 USA
[3] Univ Nebraska, Dept Phys & Astron, Lincoln, NE 68588 USA
来源：
APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 12期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1063/1.2355448
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In this letter, the authors demonstrate isotropic Fe-Pt exchange-spring nanocomposite permanent magnets with a soft magnetic phase fraction of greater than 0.5 with a coercivity of 6.5 kOe, single-phase-like magnetic behavior, and an energy product of 25.1 MG Oe. Sub-10-nm Fe-Pt clusters are formed with compositions in the two-phase Fe3Pt and FePt regions. Intracluster structuring on a scale of a few nanometers occurs after appropriate heat treatment. This ensures full exchange coupling between the two phases, allowing greater soft magnetic phase fractions. The results provide insight into developing high energy product nanostructured permanent magnets. (c) 2006 American Institute of Physics.
引用
收藏
页数：3
相关论文
共 16 条
[1]   The construction of a gas aggregation source for the preparation of mass-selected ultrasmall metal particles [J].
Baker, SH ;
Thornton, SC ;
Keen, AM ;
Preston, TI ;
Norris, C ;
Edmonds, KW ;
Binns, C .
REVIEW OF SCIENTIFIC INSTRUMENTS, 1997, 68 (04) :1853-1857
[2]   The construction of a gas aggregation source for the preparation of size-selected nanoscale transition metal clusters [J].
Baker, SH ;
Thornton, SC ;
Edmonds, KW ;
Maher, MJ ;
Norris, C ;
Binns, C .
REVIEW OF SCIENTIFIC INSTRUMENTS, 2000, 71 (08) :3178-3183
[3]  
BRANDES EA, 1983, SMITHELLS METALS REF, P13
[4]  
CULLITY BD, 2001, ELEMENTS XRAY DIFFRA, P351
[5]   PHASE DISTRIBUTION AND COMPUTED MAGNETIC-PROPERTIES OF HIGH-REMANENT COMPOSITE MAGNETS [J].
FISCHER, R ;
SCHREFL, T ;
KRONMULLER, H ;
FIDLER, J .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1995, 150 (03) :329-344
[6]   Nonuniform magnetic structure in Nd2Fe14B/Fe3B nanocomposite materials [J].
Gao, YH ;
Shindo, D ;
Petford-Long, AK .
JOURNAL OF APPLIED PHYSICS, 2003, 93 (10) :8119-8121
[7]   THIN-FILMS FROM ENERGETIC CLUSTER IMPACT - A FEASIBILITY STUDY [J].
HABERLAND, H ;
KARRAIS, M ;
MALL, M ;
THURNER, Y .
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS, 1992, 10 (05) :3266-3271
[8]   THE EXCHANGE-SPRING MAGNET - A NEW MATERIAL PRINCIPLE FOR PERMANENT-MAGNETS [J].
KNELLER, EF ;
HAWIG, R .
IEEE TRANSACTIONS ON MAGNETICS, 1991, 27 (04) :3588-3600
[9]   Interface structures in FePt/Fe3Pt hard-soft exchange-coupled magnetic nanocomposites [J].
Li, J ;
Wang, ZL ;
Zeng, H ;
Sun, SH ;
Liu, JP .
APPLIED PHYSICS LETTERS, 2003, 82 (21) :3743-3745
[10]   High-energy product exchange-spring FePt/Fe cluster nanocomposite permanent magnets [J].
Rui, X. ;
Shield, J. E. ;
Sun, Z. ;
Yue, L. ;
Xu, Y. ;
Sellmyer, D. J. ;
Liu, Z. ;
Miller, D. J. .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2006, 305 (01) :76-82
12