Anti-ferromagnetic coupling effects on energy barrier and reversal properties of recording media

被引：27

作者：

Wang, JP ^{[1
]}

Shan, ZS ^{[1
]}

Piramanayagam, SN ^{[1
]}

Chong, TC ^{[1
]}

机构：

[1] Natl Univ Singapore, Data Storage Inst, Media & Mat Dept, Singapore 117608, Singapore

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2001年 / 37卷 / 04期

关键词：

antiferromagnetically coupled film; energy barrier; magnetic recording media; thermal stability;

D O I：

10.1109/20.950866

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Analytical solutions for coercivity H-CM1, H-CM2, effective (Mrt)(eff), energy-barrier and effective thermal stability factor as a function of coupling constant J and other film parameters have been derived for two coupled ferromagnetic layers (FM-FM layer) with different magnetic properties for the first time. The condition for reduced effective (Mrt)(eff) is analyzed. These results are valuable for laminated antiferromagnetically coupled media design. This may open up a channel to raise thermal stability significantly while maintaining lower noise for longitudinal recording media.

引用

页码：1445 / 1448

页数：4

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