Magnetic force microscopy investigation of the domain structure of nanocomposite Nd2Fe14B/Fe3B magnets

被引：53

作者：

Szmaja, Witold ^{[1
]}

Grobelny, Jaroslaw ^{[2
]}

Cichomski, Michal ^{[2
]}

Hirosawa, Satoshi ^{[3
]}

Shigemoto, Yasutaka ^{[3
]}

机构：

[1] Univ Lodz, Dept Solid State Phys, PL-90236 Lodz, Poland

[2] Univ Lodz, Dept Mat Technol & Chem, PL-90236 Lodz, Poland

[3] Hitachi Met Ltd, NEOMAX Co, Magnet Mat Res Lab, Osaka 6180013, Japan

来源：

ACTA MATERIALIA | 2011年 / 59卷 / 02期

关键词：

Magnetic domain structure; Nanocomposite Nd2Fe14B/Fe3B magnets; Exchange coupling; Magnetic force microscopy; B SINTERED MAGNETS; PERMANENT-MAGNETS; ENERGY;

D O I：

10.1016/j.actamat.2010.09.056

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, a detailed magnetic force microscopy study has been made of the domain structure of isotropic nanocomposite Nd2Fe14B/Fe3B magnet ribbons prepared by melt-spinning. The domain structure is composed of interaction domains a few hundred nanometers in size, which indicates the presence of a strong exchange coupling between the grains. Within the interaction domains, a fine substructure on the same scale as the grain size is observed with high-contrast and clarity, which is an improvement over earlier results. As a consequence, the interaction domains are clusters of many single-domain grains whose magnetization directions are not precisely the same but differ slightly. In general, the interaction domains have both perpendicular and in-plane magnetization components. The domain width of the interaction domains (260 +/- 20) nm was determined by digital means (using the method of Bodenberger and Hubert), in contrast to previous investigations. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：531 / 536

页数：6

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