Development of high-performance magnetic thin film for high-density magnetic recording |
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Authors: | Tetsuya Osaka Toru Asahi Jun Kawaji Tokihiko Yokoshima |
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Affiliation: | Graduate School of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan |
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Abstract: | This overview describes our recent study on fabrication processes of high-performance magnetic thin films for high-density magnetic recording. Particularly, it is emphasized that electrochemical processes play significant roles in fabricating the recording heads and media used for the high-density recording. Newly developed electrodeposition methods for fabricating CoNiFe and CoFe soft magnetic thin films with high-saturation magnetic flux density are shown, and the key points for obtaining them are highlighted. It is summarized that the effective seedlayers for the sputter-deposited Co/Pd]n multilayered films, which are promising candidates as magnetic recording media with strong perpendicular magnetic anisotropy for the high-density magnetic recording, have been developed. We have recently succeeded in developing the novel electroless deposition methods for the CoNiFe-based soft magnetic underlayers of double-layered perpendicular magnetic recording media and for the patterned medium consisting of CoNiP magnetic nano-dot arrays, which are briefly explained. |
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Keywords: | Electrodeposited CoNiFe soft magnetic films CoFe soft magnetic films Co/Pd multilayered films Electroless-deposited CoNiP dot array Magnetic recording materials |
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