Melt-spun precipitation-hardened Sm2(Co, Cu, Fe, Zr)17 magnets with abnormal temperature dependence of coercivity

被引：92

作者：

Goll, D ^{[1
]}

Kleinschroth, I ^{[1
]}

Sigle, W ^{[1
]}

Kronmüller, H ^{[1
]}

机构：

[1] Max Planck Inst Met Forsch, D-70569 Stuttgart, Germany

来源：

APPLIED PHYSICS LETTERS | 2000年 / 76卷 / 08期

关键词：

D O I：

10.1063/1.125936

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Rapidly quenched Sm(CobalCu0.08Fe0.22Zr0.02)(8.5) (Cu-/Fe-rich) and Sm(CobalCu0.05Fe0.10Zr0.03)(8.5) (Cu-/Fe-poor) ribbons have been prepared by means of the melt-spinning technique. By applying an appropriate annealing procedure a microstructure similar to that of sintered magnets can be obtained. The energy dispersive x-ray microanalysis of the compositional dependence near the cell boundaries suggests a model for the profile of the crystal anisotropy constants responsible for the magnetic hardening. The Cu-/Fe-rich alloy shows a normal temperature dependence of coercivity with a negative temperature coefficient, but the Cu-/Fe-poor ribbons show a positive temperature coefficient in the temperature range from 400-700 K. The different temperature coefficients are discussed in terms of a pinning model. (C) 2000 American Institute of Physics. [S0003-6951(00)03908-5].

引用

页码：1054 / 1056

页数：3

共 26 条

[1] Nanocrystalline FeNdB permanent magnets with enhanced remanence
Bauer, J
Seeger, M
Zern, A
Kronmuller, H
[J]. JOURNAL OF APPLIED PHYSICS, 1996, 80 (03) : 1667 - 1673
[2] Buschow K.H.J., 1997, HDB MAGN MAT, V10, P463
[3] Sm2(Co,Fe,Cu,Zr)17 magnets for use at temperature ≥400 °C
Chen, CH
Walmer, MS
Walmer, MH
Liu, S
Kuhl, E
Simon, G
[J]. JOURNAL OF APPLIED PHYSICS, 1998, 83 (11) : 6706 - 6708
[4] REMANENCE ENHANCEMENT IN NANOSTRUCTURED MELT-SPUN SM(FE0.209CU0.061ZR0.025CO0.704)7.61
CRABBE, MW
DAVIES, HA
BUCKLEY, RA
[J]. IEEE TRANSACTIONS ON MAGNETICS, 1994, 30 (02) : 696 - 698
[5] FIDLER J, 1983, PHILOS MAG A, V47, pL19, DOI 10.1080/01418618308245252
[6] EFFECT OF ZIRCONIUM UPON STRUCTURE AND MAGNETIC-PROPERTIES OF 2-17 TYPE RARE EARTH-COBALT MAGNETS
FUKUI, Y
NISHIO, T
IWAMA, Y
[J]. IEEE TRANSACTIONS ON MAGNETICS, 1987, 23 (05) : 2705 - 2707
[7] GOLL D, UNPUB
[8] Comparison on the magnetic and structural properties of Sm(Co0.67-xFe0.25Cu0.06Zr0.02Cx)8.0, where x = 0-0.15, melt spun ribbons and cast alloys
Gong, W
Ma, BM
[J]. JOURNAL OF APPLIED PHYSICS, 1999, 85 (08) : 4657 - 4659
[9] GROENFELD M, 1990, THESIS U STUTTGART
[10] MAGNETIC DOMAINS IN RARE-EARTH COBALT PERMANENT-MAGNETS
HADJIPANAYIS, GC
HAZELTON, RC
LAWLESS, KR
HORTON, LS
[J]. IEEE TRANSACTIONS ON MAGNETICS, 1982, 18 (06) : 1460 - 1462

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