Evaluation of double-layered magnetic recording medium composed of perpendicular and longitudinal anisotropy layers

Tetsuya Osaka; Takayuki Homma; Toshihiko Watanabe; Yoshiaki Kurokawa

doi:10.1143/JJAP.33.L594

Evaluation of double-layered magnetic recording medium composed of perpendicular and longitudinal anisotropy layers

Tetsuya Osaka, Takayuki Homma, Toshihiko Watanabe, Yoshiaki Kurokawa

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

6 Citations (Scopus)

Abstract

A double-layered (DL) medium composed of a CoNiReP perpendicular anisotropy top layer (0.20 μm thick) and CoP longitudinal anisotropy underlayer (0.05 μm thick) was fabricated and its recording characteristics were investigated with a combination of a ring-type head. The reproduced voltage of the DL medium was enhanced to be larger than that of the simple summation of the reproduced voltage of the CoNiReP single-layered medium and that of the CoP one. Moreover, the reproduced waveform of the DL medium showed a single peak pulse and it did not change even at higher recording magnetomotive force (MMF). These results suggest that the reproduced voltage enhancement comes from the phase synchronization effect even at higher recording MMF.

Original language	English
Pages (from-to)	L594-L596
Journal	Japanese journal of applied physics
Volume	33
Issue number	4
DOIs	https://doi.org/10.1143/JJAP.33.L594
Publication status	Published - 1994 Apr

Keywords

Electroless-deposited medium
Perpendicular magnetic recording
Ring-type head

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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10.1143/JJAP.33.L594

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abstract = "A double-layered (DL) medium composed of a CoNiReP perpendicular anisotropy top layer (0.20 μm thick) and CoP longitudinal anisotropy underlayer (0.05 μm thick) was fabricated and its recording characteristics were investigated with a combination of a ring-type head. The reproduced voltage of the DL medium was enhanced to be larger than that of the simple summation of the reproduced voltage of the CoNiReP single-layered medium and that of the CoP one. Moreover, the reproduced waveform of the DL medium showed a single peak pulse and it did not change even at higher recording magnetomotive force (MMF). These results suggest that the reproduced voltage enhancement comes from the phase synchronization effect even at higher recording MMF.",

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T1 - Evaluation of double-layered magnetic recording medium composed of perpendicular and longitudinal anisotropy layers

AU - Osaka, Tetsuya

AU - Homma, Takayuki

AU - Watanabe, Toshihiko

AU - Kurokawa, Yoshiaki

PY - 1994/4

Y1 - 1994/4

N2 - A double-layered (DL) medium composed of a CoNiReP perpendicular anisotropy top layer (0.20 μm thick) and CoP longitudinal anisotropy underlayer (0.05 μm thick) was fabricated and its recording characteristics were investigated with a combination of a ring-type head. The reproduced voltage of the DL medium was enhanced to be larger than that of the simple summation of the reproduced voltage of the CoNiReP single-layered medium and that of the CoP one. Moreover, the reproduced waveform of the DL medium showed a single peak pulse and it did not change even at higher recording magnetomotive force (MMF). These results suggest that the reproduced voltage enhancement comes from the phase synchronization effect even at higher recording MMF.

AB - A double-layered (DL) medium composed of a CoNiReP perpendicular anisotropy top layer (0.20 μm thick) and CoP longitudinal anisotropy underlayer (0.05 μm thick) was fabricated and its recording characteristics were investigated with a combination of a ring-type head. The reproduced voltage of the DL medium was enhanced to be larger than that of the simple summation of the reproduced voltage of the CoNiReP single-layered medium and that of the CoP one. Moreover, the reproduced waveform of the DL medium showed a single peak pulse and it did not change even at higher recording magnetomotive force (MMF). These results suggest that the reproduced voltage enhancement comes from the phase synchronization effect even at higher recording MMF.

KW - Electroless-deposited medium

KW - Perpendicular magnetic recording

KW - Ring-type head

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Evaluation of double-layered magnetic recording medium composed of perpendicular and longitudinal anisotropy layers

Abstract

Keywords

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