Mechanism of coercivity enhancement by Ag addition in FePt-C granular films for heat assisted magnetic recording media

B. S.D.Ch S. Varaprasad; Y. K. Takahashi; J. Wang; T. Ina; T. Nakamura; W. Ueno; K. Nitta; T. Uruga; K. Hono

doi:10.1063/1.4880655

Mechanism of coercivity enhancement by Ag addition in FePt-C granular films for heat assisted magnetic recording media

B. S.D.Ch S. Varaprasad, Y. K. Takahashi^*, J. Wang, T. Ina, T. Nakamura, W. Ueno, K. Nitta, T. Uruga, K. Hono

^*この研究の対応する著者

研究成果: Article › 査読

33 被引用数 (Scopus)

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We investigated the Ag distribution in a FePtAg-C granular film that is under consideration for a heat assisted magnetic recording medium by aberration-corrected scanning transmission electron microscope-energy dispersive X-ray spectroscopy and X-ray absorption fine structure. Ag is rejected from the core of FePt grains during the deposition, forming Ag-enriched shell surrounding L1₀-ordered FePt grains. Since Ag has no solubility in both Fe and Pt, the rejection of Ag induces atomic diffusions thereby enhancing the kinetics of the L1₀-order in the FePt grains.

本文言語	English
論文番号	222403
ジャーナル	Applied Physics Letters
巻	104
号	22
DOI	https://doi.org/10.1063/1.4880655
出版ステータス	Published - 2014 6月 2
外部発表	はい

ASJC Scopus subject areas

物理学および天文学（その他）

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title = "Mechanism of coercivity enhancement by Ag addition in FePt-C granular films for heat assisted magnetic recording media",

abstract = "We investigated the Ag distribution in a FePtAg-C granular film that is under consideration for a heat assisted magnetic recording medium by aberration-corrected scanning transmission electron microscope-energy dispersive X-ray spectroscopy and X-ray absorption fine structure. Ag is rejected from the core of FePt grains during the deposition, forming Ag-enriched shell surrounding L10-ordered FePt grains. Since Ag has no solubility in both Fe and Pt, the rejection of Ag induces atomic diffusions thereby enhancing the kinetics of the L10-order in the FePt grains.",

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AU - Varaprasad, B. S.D.Ch S.

AU - Takahashi, Y. K.

AU - Wang, J.

AU - Ina, T.

AU - Nakamura, T.

AU - Ueno, W.

AU - Nitta, K.

AU - Uruga, T.

AU - Hono, K.

PY - 2014/6/2

Y1 - 2014/6/2

N2 - We investigated the Ag distribution in a FePtAg-C granular film that is under consideration for a heat assisted magnetic recording medium by aberration-corrected scanning transmission electron microscope-energy dispersive X-ray spectroscopy and X-ray absorption fine structure. Ag is rejected from the core of FePt grains during the deposition, forming Ag-enriched shell surrounding L10-ordered FePt grains. Since Ag has no solubility in both Fe and Pt, the rejection of Ag induces atomic diffusions thereby enhancing the kinetics of the L10-order in the FePt grains.

AB - We investigated the Ag distribution in a FePtAg-C granular film that is under consideration for a heat assisted magnetic recording medium by aberration-corrected scanning transmission electron microscope-energy dispersive X-ray spectroscopy and X-ray absorption fine structure. Ag is rejected from the core of FePt grains during the deposition, forming Ag-enriched shell surrounding L10-ordered FePt grains. Since Ag has no solubility in both Fe and Pt, the rejection of Ag induces atomic diffusions thereby enhancing the kinetics of the L10-order in the FePt grains.

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JO - Applied Physics Letters

JF - Applied Physics Letters

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ER -

Mechanism of coercivity enhancement by Ag addition in FePt-C granular films for heat assisted magnetic recording media

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