Control of Coercivity in Exchange-Coupled Graded (001) FePt : SiO2 Nanocomposite Films

被引：5

作者：

George, Tom A. ^{[1
]}

Yu, Yongsheng ^{[1
,2
]}

Yue, Lanping ^{[1
]}

Skomski, Ralph ^{[1
]}

Sellmyer, D. J. ^{[1
]}

机构：

[1] Univ Nebraska, Dept Phys & Astron, Lincoln, NE 68588 USA

[2] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150006, Heilongjiang, Peoples R China

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2010年 / 46卷 / 06期

关键词：

Coercivity; exchange-coupled composite; FePt; perpendicular recording media; COMPOSITE MEDIA;

D O I：

10.1109/TMAG.2009.2039554

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：

We fabricated exchange-coupled composite films with perpendicular anisotropy using nanograins of L1(0) FePt as a magnetically hard base layer and FePt : SiO2 as a relatively soft phase. The degree of anisotropy and nanostructure in the soft layer was controlled by varying the deposition temperature. Growth of the low-anisotropy layer followed the particulate structure of the base layer at deposition temperatures of 390 degrees C or greater. Perpendicular coercivities were strongly dependent on both the anisotropy and thickness of the softer layer.

引用

页码：2435 / 2437

页数：3

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