发明名称 |
MAGNETIC RECORDING MEDIUM, METHOD FOR MANUFACTURING MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING AND REPRODUCING DEVICE |
摘要 |
A magnetic recording medium is disclosed in which, on a non-magnetic substrate 1, at least an orientation control layer that controls orientation of a layer immediately above and a vertical magnetic layer in which an easy axis of magnetization is mainly vertically oriented with respect to the non-magnetic substrate are laminated. The orientation control layer includes an Ru-containing layer containing Ru or Ru alloy, and a diffusion prevention layer provided on the Ru-containing layer on the side of the vertical magnetic layer, is made of a material having a melting point of 1500° C. or higher and 4215° C. or lower and formed by a covalent bond or an ionic bond, and prevents thermal diffusion of Ru atoms of the Ru-containing layer. The vertical magnetic layer has a crystalline structure of crystal grains continuously formed from the Ru-containing layer with the diffusion prevention layer interposed therebetween, and includes a columnar crystal continuously formed in a thickness direction together with the crystal grains. |
申请公布号 |
US2014104997(A1) |
申请公布日期 |
2014.04.17 |
申请号 |
US201314051005 |
申请日期 |
2013.10.10 |
申请人 |
SHOWA DENKO K.K.;TOHOKU UNIVERSITY;KABUSHIKI KAISHA TOSHIBA |
发明人 |
SHIBATA HISATO;INOUE KEN;OKADA TSUBASA;KUROKAWA GOHEI;SAITO SHIN;HINATA SHINTARO;TAKAHASHI MIGAKU;MAEDA TOMOYUKI;ISOWAKI YOSUKE;KIKITSU AKIRA |
分类号 |
G11B5/738 |
主分类号 |
G11B5/738 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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