High coercive L10 FePt-C (001) nanocomopsite films with small grain size for perpendicular recording media

被引：25

作者：

Chen, J. S. ^{[1
,2
]}

Hu, J. F. ^{[2
]}

Lim, B. C. ^{[1
,2
]}

Lim, Y. K. ^{[2
]}

Liu, B. ^{[2
]}

Chow, G. M. ^{[1
]}

Ju, G. ^{[3
]}

机构：

[1] Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 117576, Singapore

[2] Data Storage Inst, Singapore 117608, Singapore

[3] Seagate Technol, Pittsburgh, PA 15222 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2008年 / 103卷 / 07期

关键词：

D O I：

10.1063/1.2833311

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

FePt-C films with various C concentrations were deposited on MgO/CrRu/glass substrate by cosputtering FePt and C at 350 degrees C. The evolution of magnetic properties and microstructure of FePt-C films with the C concentration were investigated. All FePt films showed (001) preferred orientation regardless of C concentrations. With C doping, a two-layer structure of FePt-C films was formed. The FePt-C underlying layer epitaxially grown on MgO intermediate layer were L1(0) FePt grains, while the FePt overlayer consisted of fcc FePt phase and L1(0) FePt phase. The out-of-plane coercivity measured at room temperature increased from 10.2 to 19 kOe when C concentrations increased from 0% to 15%. Further increasing the C contents to 20% and 25% caused the decrease of coercivity to 17.2 and 14.8 kOe, respectively. (C) 2008 American Institute of Physics.

引用

页数：3

共 12 条

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