The effects of magnetic interactions on first-order reversal curve (FORC) and the origin of the negative region for Nd-Fe-B based magnets

被引：5

作者：

Shen, Peng ^{[1
]}

Wang, Chao ^{[1
]}

Wu, Yaping ^{[1
]}

Han, Rui ^{[1
]}

Fang, Yikun ^{[1
]}

Zhou, Dong ^{[1
]}

Zhu, Minggang ^{[1
]}

Li, Wei ^{[1
]}

机构：

[1] Cent Iron & Steel Res Inst, Div Funct Mat, Beijing 100081, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2023年 / 938卷

关键词：

First-order reversal curve; Magnetic properties characterization; Rare earth permanent magnets; Nd-Fe-B; Micromagnetics; DIAGRAMS; COERCIVITY; TOOL;

D O I：

10.1016/j.jallcom.2023.168727

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this study, we investigated the effects of magnetic interactions within Nd-Fe-B magnets on first-order reversal curve (FORC) and the origin of negative regions in FORC diagram. Magnetostatic interaction causes the FORC diagram pattern to expand along the Hu axis, especially in the direction of positive half-axis of Hu. And the negative regions will tend to be embedded in the positive regions when magnetostatic interaction is not negligible. The origin of the negative peaks is the difference of the onset of magnetization and the subsequent magnetization process of adjacent FORCs caused by the different and complex stray fields within magnets at the beginning of the FORCs. Besides, the origin of the positive peaks is analyzed in detail as well.(c) 2023 Elsevier B.V. All rights reserved.

引用

页数：7

共 28 条

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