Magnetic recording medium
AssigneeSony Group Corporation
InventorsMinoru YAMAGA, Tooru SATO, Takahiro TAKAYAMA
Life of this patent
Estimating the term…
Abstract
An object of the present technology is to provide a magnetic recording medium that has excellent travelling stability even when preserved in a high-temperature environment. The present technology provides a magnetic recording medium, in which an average value A(E″) of loss elastic moduli E″ in a temperature range of 60° C. to 65° C. when dynamic mechanical analysis is performed on the magnetic recording medium at a frequency of 10 Hz and a heating rate of 2° C./min is 0.06 GPa or less, and an average height Rpk of protruding peaks measured using a non-contact profilometer using optical interference is 2.4 nm or less.
Claims16
A magnetic recording medium, wherein
- an average value A(E″) of loss elastic moduli E″ in a temperature range of 60° C. to 65° C. when dynamic mechanical analysis is performed on the magnetic recording medium at a frequency of 10 Hz and a heating rate of 2° C./min is 0.06 GPa or less, and
- an average height Rpk of protruding peaks measured using a non-contact profilometer using optical interference is 2.4 nm or less.
Dependencies are inferred from the claim text.