2011 Fiscal Year Final Research Report
Hexagonal ferrite thin films with nano-dot structure for high density patterned medium
| Project/Area Number |
21360148
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Electronic materials/Electric materials
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| Research Institution | Shinshu University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
LIU Xiaoxi 信州大学, 工学部, 准教授 (10372509)
YASUKAWA Yukiko 信州大学, 工学部, 特任助教 (10458995)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 高密度磁気記録 / バリウムフェライト薄膜 / ナノドット / スパッタ / 自己組織 / ナノスポット結晶化 / パターン媒体 |
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| Research Abstract |
In order to store all of the digital information in the world, HDD with huge capacity an high recording density are necessary. In this study, synthesis of a patterned media using hexagonal ferrite thin films with self assembled nano-dot structure has been tried for future high density recording media. Two under-layer, which are Si-Al layer and Au nano-dot layer have been used for the under layer of hexagonal ferrite layer. Ferrite layer is non-magnetic when it is amorphous. The crystallization temperature of ferrite layer on metal under-layer is much lower than that of non metallic under layer. The idea of this research is nano-dot crystallization of hexagonal ferrite layer with self-assembled metal nano-dot area. The MFM images show that hexagonal ferrite layer seems to be crystallized on Au nano-dot parts and other area is still amorphous and non-magnetic.
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