| 摘要 |
PROBLEM TO BE SOLVED: To provide a sputtering target material for forming a heat sink layer of a heat-assisted magnetic recording medium with a sputtering method, which demands a high thermal conductivity and a smooth surface.SOLUTION: This invention is a sputtering target material for a heat sink layer formation of a heat-assisted magnetic recording medium. In the sputtering target material, a compositional formula in an atom ratio is represented by Cu-Zr-Cr, 0.10≤x≤5.00, 0.10≤y≤1.00, and the remainder is made of inevitable impurities. |
