THE INFLUENCE OF NANOCRYSTALLINE MICROSTRUCTURE ON THE MAGNETIC-PROPERTIES OF A WIRE SHAPED FERROMAGNETIC ALLOY

被引：23

作者：

GOMEZPOLO, C ^{[1
]}

OLOFINJANA, AO ^{[1
]}

MARIN, P ^{[1
]}

VAZQUEZ, M ^{[1
]}

DAVIES, HA ^{[1
]}

机构：

[1] UNIV SHEFFIELD,DEPT ENGN MAT,SHEFFIELD S1 4DU,ENGLAND

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1993年 / 29卷 / 06期

关键词：

D O I：

10.1109/20.280944

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The magnetic properties of nanocrystalline Fe73.5Cu1Nb3Si13.5B9 alloy wire are reported for the first time. The evolution of the structure and of the magnetic properties of the wire, which was initially cast into the amorphous state, were studied as a function of annealing temperature, T(ann). In the as-cast glassy state, the wires showed typical bistable magnetic behavior while, after devitrification to a nanocrystalline structure based on alpha-FeSi grains of wean diameter approximately 10nm(T(ann) = 550-degrees-C), the coercivity and magnetostriction decreased substantially and bistability was lost. The bistability could however, be recovered on application of a torsional stress. Treatment at T(ann) > 600-degrees-C lead to grain growth and eventually to precipitation of ultrafine boride, resulting in drastic magnetic hardening.

引用

页码：2673 / 2675

页数：3

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