摘要 |
<p><P>PROBLEM TO BE SOLVED: To obtain a magnetic recording layer for a magnetic bit-patterned recording medium, with which the efficiency of writing is improved without damaging thermal stability by utilizing inclined anisotropy. <P>SOLUTION: A perpendicular magnetic recording layer of a magnetic recording medium includes a plurality of bit-patterned magnetic islands, wherein each of the plurality of islands overlay a soft magnetic under-layer. Each of the magnetic islands includes a first magnetic sub-layer adjacent a second magnetic sub-layer, wherein the first sub-layer has a relatively high magnetic anisotropy that is greater than a magnetic anisotropy of the second sub-layer. The magnetic recording layer further includes a third sub-layer, which extends to connect each of the plurality of islands. The third sub-layer may have a magnetic anisotropy that is less than that of the second sub-layer of each of the magnetic islands and/or may serve as an interlayer, extending between the first sub-layer and the soft magnetic under-layer of the recording medium, and having a structure to help to produce the greater anisotropy of the first magnetic sub-layer. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |