| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a perpendicular magnetic recording medium which reduces crystal orientation dispersion of a recording layer, and a manufacturing method thereof. <P>SOLUTION: The perpendicular magnetic recording medium 10 has a first magnetic layer 20 composed of a plurality of micro crystal particles 20a and a second magnetic layer 16, and the second magnetic layer 16 composed of a plurality of crystal particles 16a which have a magnetization easy axis aligned with the perpendicular direction of a substrate surface and non magnetic material 16b interposed between the crystal particles. On Ru crystal grains of a base layer 14, the micro crystal particles 20a of the first magnetic layer are formed while the crystal particles 16a of the second magnetic layer are formed on the micro crystal particles 20a. The particle sizes of the micro crystal particle 20a in the first magnetic layer 20 is smaller than that of the crystal particle 16a of the second magnetic layer 16. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
