L10-ordered FePtAg-C granular thin film for thermally assisted magnetic recording media (invited)

被引：44

作者：

Zhang, L. ^{[1
]}

Takahashi, Y. K. ^{[1
]}

Hono, K. ^{[1
]}

Stipe, B. C. ^{[2
]}

Juang, J. -Y. ^{[2
]}

Grobis, M. ^{[2
]}

机构：

[1] Natl Inst Mat Sci, Magnet Mat Ctr, Tsukuba, Ibaraki 3050047, Japan

[2] Hitachi Global Storage Technol, San Jose Res Ctr, San Jose, CA 95135 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2011年 / 109卷 / 07期

关键词：

D O I：

10.1063/1.3536794

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We studied highly L1(0)-ordered FePtAg-C nanogranular film as a potential high-density storage medium in thermally assisted magnetic recording (TAR). A 6.4-nm-thick FePtAg-C film with a perpendicular coercivity of 37 kOe and an average grain size of 6.1 +/- 1.8 nm was fabricated on oxidized silicon substrate with a 10 nm MgO interlayer at 450 degrees C. The time-dependence measurement of remnant coercivity showed the energy barrier of E-b = 7.6 eV similar to 300 k(B)T at room temperature, meaning the excellent thermal stability for long-term data storage. Static tester experiments on this film using a TAR head demonstrate the feasibility of recording at an areal density of similar to 450 Gbits/in.(2). (C) 2011 American Institute of Physics. [doi:10.1063/1.3536794]

引用

页数：4

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