Critical state-induced emergence of superior magnetic performances in an iron-based amorphous soft magnetic composite

被引：4

作者：

Shao, Liliang ^{[1
,2
]}

Bai, Rongsheng ^{[1
,3
]}

Wu, Yanxue ^{[4
]}

Zhou, Jing ^{[1
]}

Tong, Xing ^{[1
]}

Peng, Hailong ^{[4
]}

Liang, Tao ^{[5
]}

Li, Zongzhen ^{[6
]}

Zeng, Qiaoshi ^{[5
]}

Zhang, Bo ^{[1
]}

Ke, Haibo ^{[1
]}

Wang, Weihua ^{[1
,2
,3
]}

机构：

[1] Songshan Lake Mat Lab, Dongguan 523808, Peoples R China

[2] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

[3] North China Elect Power Univ, Sch Energy Power & Mech Engn, Beijing 100096, Peoples R China

[4] Cent South Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China

[5] Ctr High Pressure Sci & Technol Adv Res, Shanghai 201203, Peoples R China

[6] Jiangsu JITRI Adv Energy Mat Res Inst Co Ltd, Changzhou 213000, Jiangsu, Peoples R China

来源：

MATERIALS FUTURES | 2024年 / 3卷 / 02期

基金：

中国国家自然科学基金;

关键词：

amorphous soft magnetic composites; critical state; soft magnetic property; rotating magnetic field annealing; magnetic domain; POWER LOSS SEPARATION; POWDER CORES; HIGH PERMEABILITY; FE; ALLOYS; MICROSTRUCTURE; ORDER; GLASS;

D O I：

10.1088/2752-5724/ad2ae8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Soft magnetic composites (SMCs) play a pivotal role in the development of high-frequency, miniaturization and complex forming of modern electronics. However, they usually suffer from a trade-off between high magnetization and good magnetic softness (high permeability and low core loss). In this work, utilizing the order modulation strategy, a critical state in a FeSiBCCr amorphous soft magnetic composite (ASMC), consisting of massive crystal-like orders (CLOs, similar to 1 nm in size) with the feature of alpha-Fe, is designed. This critical-state structure endows the amorphous powder with the enhanced ferromagnetic exchange interactions and the optimized magnetic domains with uniform orientation and fewer micro-vortex dots. Superior comprehensive soft magnetic properties at high frequency emerge in the ASMC, such as a high saturation magnetization (M s) of 170 emu g-1 and effective permeability (mu e) of 65 combined with a core loss (P cv) as low as 70 mW cm-3 (0.01 T, 1 MHz). This study provides a new strategy for the development of high-frequency ASMCs, possessing suitable comprehensive soft magnetic performance to match the requirements of the modern magnetic devices used in the third-generation semiconductors and new energy fields.

引用

页数：12