| 主权项 |
1. A magnetic recording medium comprising:
a magnetic layer, a protective layer, and a lubricant layer in this order on a non-magnetic substrate, wherein the protective layer comprises carbon or hydrogenated carbon, the lubricant layer is formed on the protective layer to come into contact therewith, the carbon protective layer in an interface with the lubricant layer comprises nitrogen, the amount of nitrogen contained is in a range of 50 atomic % to 90 atomic %, the lubricant layer comprises a compound A expressed by the following General Formula (1):
R1—C6H4OCH2CH(OH)CH2OCH2—R2—CH2OCH2CH(OH)CH2OH (1)wherein R1 represents an alkoxy group having 1 to 4 carbon atoms, andR2 represents (i) —CF2O(CF2CF2O)x(CF2O)yCF2—, wherein those inside of parentheses of x, y are coupled in this order, in reverse order, or in a random manner, and x and y each represents real numbers of 0 to 15; (ii) —CF2CF2O(CF2CF2CF2O)zCF2CF2—, wherein z represents a real number of 1 to 15; or (iii) —CF2CF2CF2O(CF2CF2CF2CF2O)nCF2CF2CF2—, wherein n represents a real number of 0 to 4, and a compound B expressed by the following General Formula (2):
CH2(OH)CH(OH)CH2OCH2CF2CF2(OCF2CF2CF2)mOCF2CF2CH2OCH2CH(OH)CH2OH (2)wherein m represents an integer in a range of 4 to 60, a mass ratio (A/(A+B)) of the compound A to the sum of the compound A and the compound B is in a range of 0.05 to 0.9, and an average film thickness of the lubricant layer is in a range of 0.5 nm to 2 nm. |
