Magnetization loss and domain refinement in nanocrystalline tape wound cores

被引：78

作者：

Flohrer, Sybille

Schaefer, Rudolf

McCord, Jeffrey

Roth, Stefan

Schultz, Ludwig

Herzer, Giselher

机构：

[1] IFW Dresden, Inst Met Mat, D-01171 Dresden, Germany

[2] Vacuumschmelze GmbH & Co KG, D-63450 Hanau, Germany

来源：

ACTA MATERIALIA | 2006年 / 54卷 / 12期

关键词：

Kerr-Faraday-magnetometry; nanocrystalline materials; magnetic domain; dynamic phenomena; magnetization loss;

D O I：

10.1016/j.actamat.2006.03.011

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Stroboscopic Kerr microscopy observations of the dynamic magnetization process oil nanocrystalline Fe73Cu1Nb3Si16B7 tape wound cores with different induced longitudinal anisotropy are presented. As the frequency of the magnetic field increases front the quasi-static case up to 10 kHz, domain refinement is distinctive, The domain wall multiplication depends on the strength of K-u which influences excess losses. The original wide domains of the core with the weakest induced anisotropy even decay into a patchy domain pattern at 1 kHz. The occurrence of the patchy domains is discussed in terms of induction rate, amplitude, and the influence of residual anisotropies. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：3253 / 3259

页数：7

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