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

L. Zhang; Y. K. Takahashi; K. Hono; B. C. Stipe; J. Y. Juang; M. Grobis

doi:10.1063/1.3536794

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

L. Zhang^*, Y. K. Takahashi, K. Hono, B. C. Stipe, J. Y. Juang, M. Grobis

^*この研究の対応する著者

研究成果: Article › 査読

67 被引用数 (Scopus)

抄録

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 E_b = 7.6 eV ∼300 k_BT 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.

本文言語	English
論文番号	07B703
ジャーナル	Journal of Applied Physics
巻	109
号	7
DOI	https://doi.org/10.1063/1.3536794
出版ステータス	Published - 2011 4月 1
外部発表	はい

ASJC Scopus subject areas

物理学および天文学（全般）

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10.1063/1.3536794

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

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.",

author = "L. Zhang and Takahashi, {Y. K.} and K. Hono and Stipe, {B. C.} and Juang, {J. Y.} and M. Grobis",

note = "Funding Information: This work was in part supported by World Premier International Research Center Initiative (WPI Initiative) on Materials Nanoarchitronics, MEXT, Japan, Information Storage Industry Consortium (INSIC), and the NEDO project on the Development of Nanobit Technology for Ultra-High Density Magnetic Recording Project (Green IT Project).",

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AU - Stipe, B. C.

AU - Juang, J. Y.

AU - Grobis, M.

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