Texturing of magnetic disk substrates

Details Texturing of magnetic disk substrates Texturing of magnetic disk substrates

2005-12-06

2005-12-06

Talbot, Brian K. (Department: 1762)

Coating processes

Magnetic base or coating

Magnetic coating

C427S131000, C216S022000

Reexamination Certificate

active

06972135

ABSTRACT:
A method for texturing a substrate for a magnetic disk comprises abrading the substrate using nano-sized diamond particles (e.g. having a diameter less than or equal to 20 nm). A magnetic layer is then deposited over the substrate. Even when the texture is extremely smooth (e.g. less than about 2.2 ÅRa), the disk still exhibits good Hc and MrT orientation ratios, SNR and PW50.

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