Abstract
We studied highly L10-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 °C. The time-dependence measurement of remnant coercivity showed the energy barrier of Eb = 7.6 eV ∼300 kBT 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 ∼450 Gbits/in.2.
Original language | English |
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Article number | 07B703 |
Journal | Journal of Applied Physics |
Volume | 109 |
Issue number | 7 |
DOIs | |
Publication status | Published - 2011 Apr 1 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy(all)