FePtAg-C nanogranular film as thermally assisted magnetic recording (TAR) media

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

doi:10.1109/TMAG.2011.2157088

FePtAg-C nanogranular film as thermally assisted magnetic recording (TAR) media

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

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 E_b=5.1 eV∼ 200 k_BT, meaning excellent thermal stability for long-term data storage. The static tester experiments by TAR head demonstrated an areal density of 550 Gb/in².

Original language	English
Article number	6027541
Pages (from-to)	4062-4065
Number of pages	4
Journal	IEEE Transactions on Magnetics
Volume	47
Issue number	10
DOIs	https://doi.org/10.1109/TMAG.2011.2157088
Publication status	Published - 2011 Oct
Externally published	Yes

Keywords

FePt granular thin film
thermal stability
thermally assisted magnetic recording (TAR)

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/TMAG.2011.2157088

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title = "FePtAg-C nanogranular film as thermally assisted magnetic recording (TAR) media",

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 kBT, 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 = "FePt granular thin film, thermal stability, thermally assisted magnetic recording (TAR)",

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 paper 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 - Takahashi, Y. K.

AU - Hono, K.

AU - Stipe, B. C.

AU - Juang, J. Y.

AU - Grobis, M.

N1 - Funding Information: This paper 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).

PY - 2011/10

Y1 - 2011/10

N2 - 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 kBT, meaning excellent thermal stability for long-term data storage. The static tester experiments by TAR head demonstrated an areal density of 550 Gb/in2.

AB - 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 kBT, meaning excellent thermal stability for long-term data storage. The static tester experiments by TAR head demonstrated an areal density of 550 Gb/in2.

KW - FePt granular thin film

KW - thermal stability

KW - thermally assisted magnetic recording (TAR)

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FePtAg-C nanogranular film as thermally assisted magnetic recording (TAR) media

Abstract

Keywords

ASJC Scopus subject areas

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