| Document
Code: PH A |
| [21] Application Number: | 1-2006-000263 |
| [54] Title: | PERPENDICULAR MAGNETIC RECORDING MEDIUM AND PERPENDICULAR MAGNETIC RECORDING/REPRODUCING APPARATUS |
| [72] Inventor(s): |
SOICHI OIKAWA, OF , CHIBAKEN, JAPAN |
| [73] Assignee(s): |
KABUSHIKI KAISHA TOSHIBA , OF TOKYO, JAPAN |
| [74] Attorney/Agent: | SAPALO & VELEZ |
| [22] Date Filed: | 5/17/2006 |
| [30] | Priority Data: | ||||||||
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| [51] International Class7: | G11B 5/64; G11B 5/667; G11B 5/62; G11B 5/66; G11B 5/738 |
| [57] Abstract: |
| In a perpendicular magnetic recording medium, a multilayered underlayer including a first metal underlayer, a second metal underlayer having no solid solution properties with respect to the first metal underlayer and having a hole, and a third metal underlayer having solid solution properties with respect to the first metal underlayer and having no solid solution properties with respect to the second metal underlayer is formed on a substrate, and a magnetic recording layer is formed on the multilayered underlayer. |
Representative Drawing(s):
| Search Report |
| [58] Field of Search: | G11B 5/64; G11B 5/667; G11B 5/62; G11B 5/66; G11B 5/738 |
| [56] Documents Considered to be Relevant |
| Category | Citation of Document |
| A | JP 10-23314 (OOKIJIMA MAKOTO, ET. AL.) FEBRUARY 20, 1997 |
| A | JP 2001-155329 (OMORI HIROYUKI) NOVEMBER 30, 1999 |
| A | JP 20011052330 (YOSHIMURA SATORU, ET. AL.) FEBRUARY 23, 2001 |
| A | JP 2003059037 (KODAMA HIROKI ET. AL.) FEBRUARY 28, 2003 |
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