Large coercivity and granular structure of CoPt/SiO2 films

被引：35

作者：

Chen, C

Kitakami, O

Okamoto, S

Shimada, Y

Shibata, K

Tanaka, M

机构：

[1] Tohoku Univ, Sci Measurements Res Inst, Sect Solid Stat Electron Phys, Sendai, Miyagi 9808577, Japan

[2] Tohoku Univ, Sci Measurements Res Inst, Sect Surface Sci, Sendai, Miyagi 9808577, Japan

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1999年 / 35卷 / 05期

关键词：

CoPt granular film; coercivity; ordering; L1(0) phase;

D O I：

10.1109/20.800559

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：

By post-annealing the as-prepared CoPt/SiO2 samples with the atomic ratio of Co : Pt = 47.5 : 52.5, high coercivity H-c approximate to 14 kOe was obtained at room temperature. TEM and XRD revealed the ordered fct (L1(0)) structure with the lattice constant ratio c/a=0.97 in the granular films with the average grain size around 10-20 nm. The grain size and packing density effect on coercivity are also discussed.

引用

页码：3466 / 3468

页数：3

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