Magnetic properties of exchange-coupled alpha-Fe/Nd-Fe-B multilayer thin-film magnets

被引：78

作者：

Shindo, M ^{[1
]}

Ishizone, M ^{[1
]}

Sakuma, A ^{[1
]}

Kato, H ^{[1
]}

Miyazaki, T ^{[1
]}

机构：

[1] HITACHI MET LTD,MAGNET & ELECT MAT RES LAB,KUMAGAYA 360,JAPAN

来源：

JOURNAL OF APPLIED PHYSICS | 1997年 / 81卷 / 08期

关键词：

D O I：

10.1063/1.364970

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The multilayer thin films having the form of Ti(30 nm)/Fe(d(Fe))/[Nd-Fe-B(d(Nd-Fe-B))/Fe(d(Fe))] x5/Ti(30 nm)/glass were fabricated on glass substrates by means of radio frequency (rf) sputtering, with d(Fe) varied from 0 to 50 nm and d(Nd-Fe-B) from 0 to 100 nm. Magnetization measurements have revealed that the minor loops of the films are reversible in a certain range of demagnetization fields except for the films with d(Fe)similar to 0 nm or d(Nd-Fe-B)<10 nm. Micromagnetic calculation of magnetization curves has been performed, which has well reproduced the observed hysteresis loops including spring-back behavior and the dependence of the coercive field H-cJ on d(Fe) and d(Nd-Fe-B). From the comparison between experiment and calculation, we can infer that the interlayer exchange-coupling strength is about 10% of the intralayer couplings, which are found to be almost independent of d(Fe) and d(Nd-Fe-B). (C) 1997 American institute of Physics.

引用

页码：4444 / 4446

页数：3

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