Micromagnetic simulations of polycrystalline cobalt islands for patterned media

被引：8

作者：

Haratani, S ^{[1
]}

Aoyama, T ^{[1
]}

Sato, I ^{[1
]}

机构：

[1] TDK Adv Prod Prod Dev Ctr, Nagano 3850009, Japan

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2000年 / 36卷 / 05期

关键词：

micromagnetic simulation; patterned media; magnetic recording; magnetization reversal process; magnetic domain structure;

D O I：

10.1109/20.908722

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 magnetization state and the switching field of single domain polycrystalline islands (40 nm x 80 nm x 10 nm) were investigated by micromagnetic simulations. In this work, the crystalline orientations of the grains forming the islands were randomly chosen from a Gaussian distribution, centered along the in-plane short axis of the island. The remanent magnetization was shown to be parallel to the in-plane short axis when the standard deviation sigma of the distribution is below 30 degrees. The highest coercivity of an assembly of 100 individual islands was found to be between 3100 and 3700 Oe when sigma is as low as 10 degrees and the islands comprise 512 grains. Such an array is promising as recording media for densities beyond 100 Gb/in(2).

引用

页码：3164 / 3166

页数：3

共 5 条

[1] Patterned magnetic nanostructures and quantized magnetic disks [J].