Pulse current training induced marked improvement of soft magnetic properties in Fe-based amorphous alloys

被引：1

作者：

Zhang, Z. D. ^{[1
,2
,3
]}

Ye, S. M. ^{[1
,4
]}

Umetsu, R. ^{[5
]}

Yan, Y. Q. ^{[1
]}

Zhang, Y. ^{[1
,6
]}

Tong, X. ^{[1
]}

Cai, Y. F. ^{[6
]}

Zhang, Y. ^{[1
,6
]}

Zhang, B. ^{[1
]}

Sun, J. F. ^{[2
]}

Huang, Y. J. ^{[2
]}

Ke, H. B. ^{[1
]}

Bai, H. Y. ^{[1
,3
,7
]}

Wang, W. H. ^{[1
,3
,7
]}

机构：

[1] Songshan Lake Mat Lab, Dongguan, Peoples R China

[2] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin, Peoples R China

[3] Chinese Acad Sci, Inst Phys, Beijing, Peoples R China

[4] Shenzhen Univ, Coll Mechatron & Control Engn, Shenzhen, Peoples R China

[5] Tohoku Univ, Inst Mat Res, Sendai, Japan

[6] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo, Peoples R China

[7] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing, Peoples R China

来源：

MATERIALS RESEARCH LETTERS | 2025年 / 13卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Fe-based amorphous alloys; soft magnetic properties; pulse current training; structural modulation; HIGH B-S; METALLIC GLASSES; NANOCRYSTALLIZATION; MICROSTRUCTURE;

D O I：

10.1080/21663831.2024.2429610

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

It is difficult to fine-tune the atomic local structure and magnetic domain structure globally to evade the saturation magnetization (B-s)- coercivity (Hc) trade-off in amorphous alloys with high-Fe content. Herein, a unique pulse current training is introduced to optimize the soft magnetic properties of Fe-based amorphous alloys, achieving 1.78 T B-s and 1.6 A/m H-c in Fe83.3Si4B8P4Cu0.7. Structural analysis shows that low coercivity is due to the almost no pinning-sites magnetic domain structures despite a relative large grain size of 25 nm. Training accumulates energy to activate soft regions and rearrange structure, eliminating quenching-induced stresses and inhomogeneities to minimize reversal pinning.

引用

页码：148 / 154

页数：7

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