Surface Magnetization Processes in Amorphous Microwires

被引：3

作者：

Chiriac, Horia ^{[1
]}

Lostun, Mihaela ^{[1
]}

Ovari, Tibor-Adrian ^{[1
]}

机构：

[1] Natl Inst Res & Dev Tech Phys, RO-700050 Iasi, Romania

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2010年 / 46卷 / 02期

关键词：

Amorphous glass-coated microwires; magnetization process; magneto-optical Kerr effect; surface magnetization; ANISOTROPY; REVERSAL; STRESS;

D O I：

10.1109/TMAG.2009.2033354

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：

Surface magnetization processes in ferromagnetic glass-coated amorphous microwires with positive, negative, and nearly zero magnetostriction have been investigated. The results indicate helical magnetization in the surface region of positive magnetostrictive microwires and enhanced soft magnetic properties on the axial direction. The typical bistable behavior of such microwires is maintained within the surface region. Nearly zero magnetostrictive microwires with diameters larger than 20 mu m also display bistability in the surface region, whilst negative magnetostrictive ones are not bistable. The values of the metallic nucleus diameter and glass coating thickness affect the surface magnetoelastic anisotropy, as emphasized by the changes in the values of the axial and transverse switching fields. The obtained results are important for a better understanding and control over the surface magnetization processes for high frequency applications of amorphous microwires.

引用

页码：383 / 386

页数：4

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