Influence of magnetic domain size on dipolar interactions and hysteresis field asymmetry in layered high/low coercivity perpendicular anisotropy systems

被引：5

作者：

Hauet, Thomas ^{[1
,2
]}

Hellwig, Olav ^{[1
]}

机构：

[1] HGST, San Jose Res Ctr, San Jose, CA 95135 USA

[2] Univ Lorraine, Inst Jean Lamour, UMR CNRS 7198, F-54506 Vandoeuvre Les Nancy, France

来源：

JOURNAL OF APPLIED PHYSICS | 2014年 / 115卷 / 12期

关键词：

MEDIA;

D O I：

10.1063/1.4870136

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Dipolar interactions in low-coercivity/Pd/high-coercivity [Co/Pd](X)/Pd/[Co/Pd](10) multilayer systems are studied as a function of the domain size in the [Co/Pd](X) low-coercivity layer (LCL), while maintaining the domain size in the high-coercivity layer (HCL) constant. As the number of repeats X increases from 5 to 30, the mean domain size of the [Co/Pd](X) LCL decreases from hundreds of micron to hundreds of nanometers. After demagnetization, different regimes can be distinguished from partial or exact domain duplication for LCL domain size larger than HCL one to uncorrelated behavior for much smaller LCL domains. The results obtained via magnetic force microscopy allow understanding the symmetry and asymmetry versus externally applied field as observed in macroscopic magnetometry measurements. (C) 2014 AIP Publishing LLC.

引用

页数：5

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