Perpendicular magnetic recording hard disk media using ferrite substrate

Yoshihisa Nakamura; Setsuo Yamamoto; Hiroaki Muraoka; Isao Watanabe; Hideo Fujii

doi:10.1016/0304-8853(94)00141-3

Perpendicular magnetic recording hard disk media using ferrite substrate

Yoshihisa Nakamura, Setsuo Yamamoto, Hiroaki Muraoka, Isao Watanabe, Hideo Fujii

Broadband Engineering Division

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

1 Citation (Scopus)

Abstract

To serve the needs of high linear bit density recording and high data transfer rate, a new perpendicular recording hard disk media constitution is proposed. In the new hard disk media, a Co-Cr layer is directly deposited on a soft-magnetic Mn-Zn single-crystal ferrite substrate. The ferrite substrate hard disk showed superior high-frequency response to a conventional Co-Cr/Fe-Ni-Nb double-layered hard disk with glass substrate. This improvement in high frequencies is brought about by suppressing the eddy current losses because of high electric resistivity of the ferrite substrate.

Original language	English
Pages (from-to)	310-314
Number of pages	5
Journal	Journal of Magnetism and Magnetic Materials
Volume	134
Issue number	2-3
DOIs	https://doi.org/10.1016/0304-8853(94)00141-3
Publication status	Published - 1994 Jun

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1016/0304-8853(94)00141-3

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title = "Perpendicular magnetic recording hard disk media using ferrite substrate",

abstract = "To serve the needs of high linear bit density recording and high data transfer rate, a new perpendicular recording hard disk media constitution is proposed. In the new hard disk media, a Co-Cr layer is directly deposited on a soft-magnetic Mn-Zn single-crystal ferrite substrate. The ferrite substrate hard disk showed superior high-frequency response to a conventional Co-Cr/Fe-Ni-Nb double-layered hard disk with glass substrate. This improvement in high frequencies is brought about by suppressing the eddy current losses because of high electric resistivity of the ferrite substrate.",

author = "Yoshihisa Nakamura and Setsuo Yamamoto and Hiroaki Muraoka and Isao Watanabe and Hideo Fujii",

year = "1994",

month = jun,

doi = "10.1016/0304-8853(94)00141-3",

language = "English",

volume = "134",

pages = "310--314",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

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TY - JOUR

T1 - Perpendicular magnetic recording hard disk media using ferrite substrate

AU - Nakamura, Yoshihisa

AU - Yamamoto, Setsuo

AU - Muraoka, Hiroaki

AU - Watanabe, Isao

AU - Fujii, Hideo

PY - 1994/6

Y1 - 1994/6

N2 - To serve the needs of high linear bit density recording and high data transfer rate, a new perpendicular recording hard disk media constitution is proposed. In the new hard disk media, a Co-Cr layer is directly deposited on a soft-magnetic Mn-Zn single-crystal ferrite substrate. The ferrite substrate hard disk showed superior high-frequency response to a conventional Co-Cr/Fe-Ni-Nb double-layered hard disk with glass substrate. This improvement in high frequencies is brought about by suppressing the eddy current losses because of high electric resistivity of the ferrite substrate.

AB - To serve the needs of high linear bit density recording and high data transfer rate, a new perpendicular recording hard disk media constitution is proposed. In the new hard disk media, a Co-Cr layer is directly deposited on a soft-magnetic Mn-Zn single-crystal ferrite substrate. The ferrite substrate hard disk showed superior high-frequency response to a conventional Co-Cr/Fe-Ni-Nb double-layered hard disk with glass substrate. This improvement in high frequencies is brought about by suppressing the eddy current losses because of high electric resistivity of the ferrite substrate.

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EP - 314

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 2-3

ER -

Perpendicular magnetic recording hard disk media using ferrite substrate

Abstract

ASJC Scopus subject areas

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