DocumentCode :
1328739
Title :
FePtAg-C Nanogranular Film as Thermally Assisted Magnetic Recording (TAR) Media
Author :
Zhang, Leiqi ; Takahashi, Yukiko K. ; Hono, Kazuhiro ; Stipe, Barry C. ; Juang, Jyh-Ching ; Grobis, Michael
Author_Institution :
Nat. Inst. for Mater. Sci., Tsukuba, Japan
Volume :
47
Issue :
10
fYear :
2011
Firstpage :
4062
Lastpage :
4065
Abstract :
We studied highly L10 -ordered FePtAg-C nanogranular film as a potential high-density storage medium for thermally assisted magnetic recording (TAR). A 6.4-nm-thick FePtAg-C film was fabricated on an oxidized silicon substrate with a 10-nm MgO underlayer at 550°C, with the perpendicular coercivity of 35 kOe, and average grain size of 6.2 ± 1.4 nm. The time-dependence measurement of remnant coercivity results in the energy barrier Eb=5.1 eV ~ 200 kB T, meaning excellent thermal stability for long-term data storage. The static tester experiments by TAR head demonstrated an areal density of 550 Gb/in2.
Keywords :
carbon; coercive force; iron alloys; magnetic multilayers; magnetic recording; magnetic thin films; nanofabrication; nanomagnetics; nanostructured materials; platinum alloys; remanence; silver alloys; thermal stability; FePtAg-C; Si-MgO; energy barrier; nanogranular film; oxidized silicon substrate; perpendicular coercivity; remnant coercivity; temperature 550 degC; thermal stability; thermally assisted magnetic recording media; time-dependence measurement; Coercive force; Iron; Magnetic recording; Media; Silicon; Substrates; Thermal stability; FePt granular thin film; thermal stability; thermally assisted magnetic recording (TAR);
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2011.2157088
Filename :
6027541
Link To Document :
بازگشت