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Structure, morphology and magnetic properties of Fe-B-Si-Nb glassy alloy thin film prepared by a pulsed laser deposition method |
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| Authors: | Kana Takenaka Toshio Sugimoto Akihiro Makino Yoshihiko Hirotsu Akihisa Inoue |
| Affiliation: | a RIMCOF Tohoku University Laboratory, R&D Institute of Metals and Composites for Future Industries, Sendai 980-8577, Japan b Fujitsu Laboratory Ltd., Morinosatowakamiya 243-0197, Japan c Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan d Osaka Center for Industrial Materials Research, Tohoku University, Sakai 599-8531, Japan e Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka 567-0047, Japan |
| Abstract: | With the aim of applying to a soft magnetic underlayer of the double-layered perpendicular magnetic recording media, an Fe74.9B17.5Si2.5Nb5.1 alloy thin film was fabricated on Si substrate by a pulsed laser deposition method. The Fe-based alloy thin film of 200 nm in thickness was confirmed as a glassy structure. The thermal properties of the thin film have similar features to those for the melt-spun glassy alloy ribbon. The glassy alloy thin film exhibits good soft magnetic properties, i.e., high Bs of 1.2 T and in-plane low Hc of 134 A/m. The Fe-B-Si-Nb glassy alloy thin film is expected to be suitable for the soft magnetic underlayer material in the double-layered perpendicular magnetic recording media. |
| Keywords: | Deposition Magnetic materials Thin film |
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