| 摘要 |
PROBLEM TO BE SOLVED: To provide an Ag alloy thermal diffusion control film which is used for a magnetic medium for heat assisted recording, maintains high thermal conductivity and includes all of high thermal diffusivity, smooth surface roughness, and high heat resistance in combination with one another. SOLUTION: The thermal diffusion control film used for a magnetic recording medium for heat assisted recording is configured of an Ag alloy having Ag as a main component, and satisfies: the surface roughness Ra of 1.0 nm or less; the thermal conductivity of 100 W/(m K) or more; and the thermal diffusivity of 4.0×10<SP>-5</SP>m<SP>2</SP>/sec or more. COPYRIGHT: (C)2011,JPO&INPIT
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