Compositional Structure and Magnetic Properties of CoCrPt-SiOx Perpendicular Recording Medium

被引：4

作者：

Futamoto, Masaaki ^{[1
]}

Handa, Takahiro ^{[1
]}

Takahashi, Yoshio ^{[2
]}

机构：

[1] Chuo Univ, Fac Sci & Engn, Tokyo 1128551, Japan

[2] Hitachi Ltd, Cent Res Lab, Tokyo 1858601, Japan

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2008年 / 44卷 / 11期

关键词：

CoCrPt-SiOx; composition; perpendicular recording medium; thermal stability; transmission electron microscope;

D O I：

10.1109/TMAG.2008.2002509

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 diameter and compositional variations of magnetic crystal grains in a CoCrPt-SiOx perpendicular magnetic recording medium were investigated by using a transmission electron microscope equipped with an energy-dispersive X-ray spectrometer. The grain boundary composition was estimated from the average film and the average grain compositions by taking account of their volumes. It has been shown that the composition of individual grain depends little on grain diameter. The variations in the magnetic anisotropy energy and the saturation magnetization are estimated from the compositions of individual magnetic crystal grains. The thermal stability of magnetic crystal grain is discussed on the basis of the estimated KuV/kT value.

引用

页码：3488 / 3491

页数：4

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