Invention Grant
US07936536B2 Magnetic recording medium having lands with curved upper surfaces and magnetic recording and reproducing apparatus 有权
磁记录介质具有带曲面上表面的平台和磁记录和重放装置

Magnetic recording medium having lands with curved upper surfaces and magnetic recording and reproducing apparatus
Abstract:
In a discrete track medium and a patterned medium, a meniscus adsorptive force is reduced and writing into adjacent tracks is prevented. A magnetic layer in lands or patterns in the discrete track medium or the patterned medium is formed into a cylindrical shelly or spherical shelly shape with a uniform thickness. Moreover, a height of cylindrical shelly land or a height of spherical shelly land is changed between 5 nm and 30 nm according to radial positions. Thus, an effect is achieved for providing a magnetic recording medium and a magnetic disk apparatus which are excellent in realizing higher recording density and higher reliability.
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