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

Tetsuya Osaka, Takayuki Homma, Toshihiko Watanabe, Yoshiaki Kurokawa

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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 languageEnglish
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume33
Issue number4 B
Publication statusPublished - 1994

Fingerprint

Magnetic recording
magnetic recording
Anisotropy
anisotropy
evaluation
recording
Electric potential
electric potential
Synchronization
synchronism
waveforms
augmentation
rings
pulses

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

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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

Y1 - 1994

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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.

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VL - 33

JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

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