Fabrication of SmCo5 double-layered perpendicular magnetic recording media

Tetsuya Osaka; Yuki Yamashita; Junichi Sayama; Toru Asahi; Jun Ariake; Kiko Harada; Kazuhiro Ouchi

doi:10.1109/TMAG.2007.892591

Fabrication of SmCo₅ double-layered perpendicular magnetic recording media

Tetsuya Osaka^*, Yuki Yamashita, Junichi Sayama, Toru Asahi, Jun Ariake, Kiko Harada, Kazuhiro Ouchi

^*Corresponding author for this work

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

8 Citations (Scopus)

Abstract

We fabricated SmCo₅ double-layered perpendicular magnetic recording media with high perpendicular magnetic anisotropy for realizing ultra high density recording. A double-layered medium with a Ru buffer layer introduced between a Cu/Ti intermediate layer and a Co-Zr-Nb soft magnetic underlayer exhibited high perpendicular magnetic anisotropy, whereas that without the Ru buffer layer did not. Auger electron spectroscopy revealed that the Ru buffer layer inhibited interdiffusion between the Cu/Ti intermediate layer and the Co-Zr-Nb soft magnetic underlayer. We report here for the first time the read-write characteristics of SmCo₅ double-layered perpendicular magnetic recording media. The medium noise was small in the medium with a Sm-Co layer deposited under high Ar gas pressure owing to small magnetic clusters.

Original language	English
Pages (from-to)	2109-2111
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	43
Issue number	6
DOIs	https://doi.org/10.1109/TMAG.2007.892591
Publication status	Published - 2007 Jun

Keywords

Cu/Ti intermediate layer
Double-layered medium
Perpendicular magnetic recording
Ru buffer layer

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

Access to Document

10.1109/TMAG.2007.892591

Cite this

@article{e4171382202d4f62891ddd7a4b737c02,

title = "Fabrication of SmCo5 double-layered perpendicular magnetic recording media",

abstract = "We fabricated SmCo5 double-layered perpendicular magnetic recording media with high perpendicular magnetic anisotropy for realizing ultra high density recording. A double-layered medium with a Ru buffer layer introduced between a Cu/Ti intermediate layer and a Co-Zr-Nb soft magnetic underlayer exhibited high perpendicular magnetic anisotropy, whereas that without the Ru buffer layer did not. Auger electron spectroscopy revealed that the Ru buffer layer inhibited interdiffusion between the Cu/Ti intermediate layer and the Co-Zr-Nb soft magnetic underlayer. We report here for the first time the read-write characteristics of SmCo5 double-layered perpendicular magnetic recording media. The medium noise was small in the medium with a Sm-Co layer deposited under high Ar gas pressure owing to small magnetic clusters.",

keywords = "Cu/Ti intermediate layer, Double-layered medium, Perpendicular magnetic recording, Ru buffer layer",

author = "Tetsuya Osaka and Yuki Yamashita and Junichi Sayama and Toru Asahi and Jun Ariake and Kiko Harada and Kazuhiro Ouchi",

note = "Funding Information: This work was supported in part by the Special Coordination Funds for Promoting Science and Technology “Establishment of Consolidated Research Institute for Advanced Science and Medical Care” from the MEXT, Japan.",

year = "2007",

month = jun,

doi = "10.1109/TMAG.2007.892591",

language = "English",

volume = "43",

pages = "2109--2111",

journal = "IEEE Transactions on Magnetics",

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publisher = "Institute of Electrical and Electronics Engineers Inc.",

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T1 - Fabrication of SmCo5 double-layered perpendicular magnetic recording media

AU - Osaka, Tetsuya

AU - Yamashita, Yuki

AU - Sayama, Junichi

AU - Asahi, Toru

AU - Ariake, Jun

AU - Harada, Kiko

AU - Ouchi, Kazuhiro

N1 - Funding Information: This work was supported in part by the Special Coordination Funds for Promoting Science and Technology “Establishment of Consolidated Research Institute for Advanced Science and Medical Care” from the MEXT, Japan.

PY - 2007/6

Y1 - 2007/6

N2 - We fabricated SmCo5 double-layered perpendicular magnetic recording media with high perpendicular magnetic anisotropy for realizing ultra high density recording. A double-layered medium with a Ru buffer layer introduced between a Cu/Ti intermediate layer and a Co-Zr-Nb soft magnetic underlayer exhibited high perpendicular magnetic anisotropy, whereas that without the Ru buffer layer did not. Auger electron spectroscopy revealed that the Ru buffer layer inhibited interdiffusion between the Cu/Ti intermediate layer and the Co-Zr-Nb soft magnetic underlayer. We report here for the first time the read-write characteristics of SmCo5 double-layered perpendicular magnetic recording media. The medium noise was small in the medium with a Sm-Co layer deposited under high Ar gas pressure owing to small magnetic clusters.

AB - We fabricated SmCo5 double-layered perpendicular magnetic recording media with high perpendicular magnetic anisotropy for realizing ultra high density recording. A double-layered medium with a Ru buffer layer introduced between a Cu/Ti intermediate layer and a Co-Zr-Nb soft magnetic underlayer exhibited high perpendicular magnetic anisotropy, whereas that without the Ru buffer layer did not. Auger electron spectroscopy revealed that the Ru buffer layer inhibited interdiffusion between the Cu/Ti intermediate layer and the Co-Zr-Nb soft magnetic underlayer. We report here for the first time the read-write characteristics of SmCo5 double-layered perpendicular magnetic recording media. The medium noise was small in the medium with a Sm-Co layer deposited under high Ar gas pressure owing to small magnetic clusters.

KW - Cu/Ti intermediate layer

KW - Double-layered medium

KW - Perpendicular magnetic recording

KW - Ru buffer layer

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JF - IEEE Transactions on Magnetics

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