发明名称 |
THERMALLY ASSISTED MAGNETIC HEAD, METHOD OF MANUFACTURING THE SAME, HEAD GIMBAL ASSEMBLY, AND HARD DISK DRIVE |
摘要 |
A thermally assisted magnetic head includes a main magnetic pole layer, a near-field light generating layer having a generating end part generating near-field light arranged within a medium-opposing surface, and an optical waveguide guiding light to the near-field light generating layer. The near-field light generating layer has a laminated structure in which a first thin-film metal layer formed in a thin film form along a direction intersecting the medium-opposing surface and a second thin-film metal layer formed in a thin film form and formed using a second metal larger in hardness than a first metal forming the first thin-film metal layer are alternately laminated. Further, in the second thin-film metal layer, a defect part is formed, the defect part is a part smaller in thickness than another part or is a hole part, and a flat layer part other than the defect part surrounds the defect part. |
申请公布号 |
US2015085629(A1) |
申请公布日期 |
2015.03.26 |
申请号 |
US201314035015 |
申请日期 |
2013.09.24 |
申请人 |
SASAKI Yoshitaka;ITO Hiroyuki;ARAKI Hironori;TANEMURA Shigeki;SATO Kazuki;FUJII Ryuji |
发明人 |
SASAKI Yoshitaka;ITO Hiroyuki;ARAKI Hironori;TANEMURA Shigeki;SATO Kazuki;FUJII Ryuji |
分类号 |
G11B5/48;G11B5/127 |
主分类号 |
G11B5/48 |
代理机构 |
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代理人 |
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主权项 |
1. A thermally assisted magnetic head comprising a main magnetic pole layer having a magnetic pole end face arranged within a medium-opposing surface opposing a magnetic recording medium; a near-field light generating layer having a generating end part arranged within the medium-opposing surface, the generating end part generating near-field light for heating the magnetic recording medium; and an optical waveguide guiding light to the near-field light generating layer,
wherein the near-field light generating layer has a laminated structure in which a first thin-film metal layer formed in a thin film form along a direction intersecting the medium-opposing surface and a second thin-film metal layer formed in a thin film form along the direction intersecting the medium-opposing surface and formed using a second metal larger in hardness than a first metal forming the first thin-film metal layer are alternately laminated, and wherein in the second thin-film metal layer, a defect part is formed, the defect part is a part smaller in thickness than another part or is a hole part, and a flat layer part other than the defect part surrounds the defect part. |
地址 |
Milpitas CA US |