Patent ID: 6033538
Filing Date: 2000-03-07
Classification: C23C,G11B

Abstract:
A method for producing a magneto-optical recording medium, the method comprising the steps of:sputtering a first magnetic layer onto a substrate in the form of at least one magnetic film as a sub-layer which is magnetized in a predetermined direction according to a data signal; andsputtering a second magnetic film onto the first magnetic layer in the form of at least one magnetic film as a sub-layer which is magnetically connected to said first magnetic layer by an exchange interaction, so that a boundary magnetic wall exists between said first magnetic layer and said second magnetic layer at room temperature,wherein,at least a magnetic film of the magnetic films composing said first magnetic layer which is adjacent to said second magnetic layer is formed with a higher sputter gas pressure than a sputter gas pressure applied when forming a magnetic film of the magnetic films composing said second magnetic layer which is adjacent to said first magnetic layer to thereby impart stability to the boundary magnetic wall in which magnetic inversion of a recording domain in the first magnetic layer is essentially temperature independent at room temperature.