Co-based soft magnetic bulk amorphous ferromagnets prepared by powder consolidation

被引：13

作者：

Bednarcik, J

Kollár, P

Roth, S

Eckert, J

机构：

[1] Safarik Univ, Fac Sci, Dept Solid State Phys, Kosice 04154, Slovakia

[2] IFW Dresden, Inst Met, D-01069 Dresden, Germany

来源：

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2003年 / 199卷 / 02期

关键词：

D O I：

10.1002/pssa.200306679

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Co(70.3)Fe(4.7)Si(10)B(15) and Co(56)Fe(16)Zr(8)B(20) amorphous ribbons have been short time ball-milled in order to prepare powder samples. The powders were consolidated by hot pressing into disc-shaped bulk specimens. The influence of the consolidation temperature on the magnetic properties of bulk samples was investigated. Optimized consolidation parameters allowed to obtain bulk glassy samples without significant crystallization. In contrast, the gradual devitrification of the Co-based bulk metallic glasses during consolidation leads to a giant increase in coercivity. The observed magnetic hardening is assumed to be due to pinning of domain walls by crystallites. The lowest values of coercivity of 23 A/m and 73 A/m were achieved after consolidation at 540degreesC and 600degreesC for Co(70.3)Fe(4.7)Si(10)B(15) and Co(56)Fe(16)Zr(8)B(20) bulk samples, respectively. (C) 2003 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：299 / 304

页数：6

共 19 条

[1]

CHEN H, 1994, NATURE, V367, P99

[2] GLASS-FORMING RANGE IN MECHANICALLY ALLOYED NI-ZR AND THE INFLUENCE OF THE MILLING INTENSITY [J].