Magnetic recording medium and method of fabricating the same

Abstract

The present invention is to provide a method of fabricating a magnetic recording medium capable of forming a protective layer with a stable performance even in a case where a thickness thereof is as thin as 100 nm or less, and a magnetic recording medium fabricated by the method. A magnetic recording medium is fabricated in the following manner, that is, a magnetic layer having a ferromagnetic metal thin film having a thickness as thin as 100 nm or less is formed on one main surface of a long non-magnetic support, and on the magnetic layer, a protective layer containing carbon is formed by the chemical vapor deposition process using an ion source equipped with a hollow cathode.

1 - 4 . (canceled)  
   
   
       5 . A magnetic recording medium comprising: 
 a long non-magnetic support;    a magnetic layer having a ferromagnetic metal thin film having a thickness of 100 nm or less, and formed on one surface of the non-magnetic support; and    a carbon-containing protective layer formed on the magnetic layer by the chemical vapor deposition process using an ion source equipped with a hollow cathode.    
   
   
       6 . The magnetic recording medium according to  claim 5 , wherein said protective layer has a thickness of 2 nm to 16 nm.  
   
   
       7 . The magnetic recording medium according to  claim 5 , wherein said protective layer has a ratio (D/G) of an 15 intensity (G) having a peak of 1,550 cm −1  or more and 1,650 cm −1  or less and an intensity (D) having a peak of  1 , 350  cm −1  or more and 1,450 cm −1  or less in Raman scattering spectrum being 1.0 or less.  
   
   
       8 . The magnetic recording medium according to  claim 6 , wherein said protective layer has a ratio (D/G) of an  15  intensity (G) having a peak of 1,550 cm −1  or more and 1,650 cm −1  or less and an intensity (D) having a peak of 1,350 cm −1  or more and 1,450 cm −1  or less in Raman scattering spectrum being 1.0 or less.