CoPt-TiO_2垂直磁気記録薄膜の磁気特性と膜構造(媒体および一般)

橋本 一慶; 長崎 侑弥; 戸田 哲也; 大貫 仁; 有明 順; 平野 辰巳; 曽山 和彦; 山崎 大; 武田 全康; 鳥飼 直也

doi:10.11485/itetr.32.28.0_27

32.28

Session ID : MMS2008-44

DOI https://doi.org/10.11485/itetr.32.28.0_27

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Nano-structure and Magnetic Property of CoPt-TiO_2 Perpendicular Magnetic Recording Film

Kazuyoshi HASHIMOTO, Yuya NAGASAKI, Tetuya TODA, Jin ONUKI, Jun ARIAKE, Tatumi HIRANO, Kazuhiko SOYAMA, Dai YAMAZAKI, Yasuhiro TAKEDA, Naoya TORIKAI

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Keywords: magnetic properties, perpendicular magnetic recording, hard disk, X-ray diffraction

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Abstract

The magnetic characteristics and nano-structures of CoPt-TiO_2/Ru/Pt/SiO_2 layered magnetic films were investigated as a function of the thickness of Ru under-layer using X-ray diffraction and Auger electron spectroscopy. It was found that He of layered films increased with the thickness of Ru under-layer. Above result was found to be caused by the fact that the grain size increase and high hep c-axis orientations of CoPt film were obtained by the increase of the thickness of Ru under-layer.

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