Exchange coupling strength in synthetic ferrimagnetic media

被引：19

作者：

Inomata, A ^{[1
]}

Abarra, EN ^{[1
]}

Acharya, BR ^{[1
]}

Akimoto, H ^{[1
]}

Okamoto, I ^{[1
]}

机构：

[1] Fujitsu Labs Ltd, Atsugi, Kanagawa 2430197, Japan

来源：

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

关键词：

antiferromagnetic coupling strength; magnetic recording media; thermal stability;

D O I：

10.1109/20.950867

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：

The antiferromagnetic exchange coupling strength (H-ex) between two CoCrPtB magnetic layers in bilayer synthetic ferrimagnetic media (SFM) is investigated. H-ex is found to be inversely proportional to the thickness and magnetization of the initial magnetic layer (L1). H-ex also shows a decrease with increasing temperature. An exchange coupling strength of J approximate to 0.05 erg/cm(2) was obtained from H-ex. For further improvement of thermal stability at higher recording densities, the thickness or magnetic anisotropy of L1 may be increased. On the other hand, for an effective SFM, the coercivity of L1 must be lower than H-ex. Therefore, a large H-ex is critical for better thermal stabilization.

引用

页码：1449 / 1451

页数：3

共 11 条

[1] Longitudinal magnetic recording media with thermal stabilization layers [J].