Magnetic Properties and Columnar Structure for CoPt Alloy Granular Media with Grain Boundary Oxides of Various Melting Points

Ryosuke Kushibiki; Kim Kong Tham; Shintaro Hinata; Shin Saito

doi:10.1109/TMAG.2017.2706959

Magnetic Properties and Columnar Structure for CoPt Alloy Granular Media with Grain Boundary Oxides of Various Melting Points

Ryosuke Kushibiki, Kim Kong Tham, Shintaro Hinata, Shin Saito

ENG - Electronic Engineering

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

7 Citations (Scopus)

Abstract

Investigation of the effect of the melting point (Tm) of various single oxides on the columnar growth and generation of the nucleation site for CoPt granular media deposited at room temperature were conducted. When oxide with Tm from 1857 °C to 2410 °C is added to the granular media, thickness of the heteroepitaxial growth of the magnetic grains on the Ru underlayer (columnar structure) decreases from 13 to 5.5 nm. The employment of oxide with Tm of the range from 450 °C to 2410 °C to the granular media will lead to the reduction of grain size from 5.6 to 3.0 nm, due to the suppression of the lateral grain growth by the high Tm oxide.

Original language	English
Article number	7932517
Journal	IEEE Transactions on Magnetics
Volume	53
Issue number	11
DOIs	https://doi.org/10.1109/TMAG.2017.2706959
Publication status	Published - 2017 Nov

Keywords

CoPt oxide granular media
high Ku
oxide melting point
small magnetic grain size

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/TMAG.2017.2706959

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title = "Magnetic Properties and Columnar Structure for CoPt Alloy Granular Media with Grain Boundary Oxides of Various Melting Points",

abstract = "Investigation of the effect of the melting point (Tm) of various single oxides on the columnar growth and generation of the nucleation site for CoPt granular media deposited at room temperature were conducted. When oxide with Tm from 1857 °C to 2410 °C is added to the granular media, thickness of the heteroepitaxial growth of the magnetic grains on the Ru underlayer (columnar structure) decreases from 13 to 5.5 nm. The employment of oxide with Tm of the range from 450 °C to 2410 °C to the granular media will lead to the reduction of grain size from 5.6 to 3.0 nm, due to the suppression of the lateral grain growth by the high Tm oxide.",

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AU - Hinata, Shintaro

AU - Saito, Shin

PY - 2017/11

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AB - Investigation of the effect of the melting point (Tm) of various single oxides on the columnar growth and generation of the nucleation site for CoPt granular media deposited at room temperature were conducted. When oxide with Tm from 1857 °C to 2410 °C is added to the granular media, thickness of the heteroepitaxial growth of the magnetic grains on the Ru underlayer (columnar structure) decreases from 13 to 5.5 nm. The employment of oxide with Tm of the range from 450 °C to 2410 °C to the granular media will lead to the reduction of grain size from 5.6 to 3.0 nm, due to the suppression of the lateral grain growth by the high Tm oxide.

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KW - oxide melting point

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Magnetic Properties and Columnar Structure for CoPt Alloy Granular Media with Grain Boundary Oxides of Various Melting Points

Abstract

Keywords

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