Magnetic reversal and magnetic memory effect in melt-spun Pr2Fe14B/α-Fe nanocomposite ribbons

被引：0

作者：

韩广兵 ^{[1
]}

苏浩 ^{[1
]}

高汝伟 ^{[1
]}

于淑云 ^{[1
]}

康仕寿 ^{[1
]}

朱明刚 ^{[2
]}

李卫 ^{[2
]}

X.B.Liu ^{[3
]}

机构：

[1] School of Physics,Shandong University

[2] Department of Physics,University of Texas at Arlington

[3] Division of Functional Materials,Central Iron & Steel Research Institute

来源：

Journal of Rare Earths | 2015年 / 33卷 / 12期

基金：

中国国家自然科学基金;

关键词：

magnetization reversal; exchange coupling; magnetic memory effect; nanocomposite alloys; coercivity; rare earths;

D O I：

暂无

中图分类号：

TB383.1 [];

学科分类号：

070205 ; 080501 ; 1406 ;

摘要：

The influence of CoCr addition on the microstructure and magnetic properties was investigated in nanocomposite PrFeB/α-Fe alloys prepared by melt spinning.It was shown that the magnetic properties of PrFeB/α-Fe nanocomposite were improved by an addition of 10 at.%CoCr,in particular,coercivity(H) from 4.9 up to 5.3 kOe,maximum energy product((BH)max from 10.6 up to 13.9 MGOe,and remanence(M) from 94.2 up to 98.4 emu/g.The field dependencies of the reversible and irreversible magnetization components were derived from the recoil loops.Combining with the initial magnetization curves,the results indicated that the pinning of domain walls at the grain boundaries dominated the magnetization reversal in PrFeB/α-Fe nanocomposite alloys.The magnetic memory effect was studied by measuring the magnetic moment relaxation at a cycle negative magnetic field with time interval of 600 s.The exchange-spring magnets with magnetic memory effect have a high potential for high density magnetic recording.

引用

页码：1303 / 1309

页数：7

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