MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDER HAVING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a vertical magnetic recording medium for thermal assisted magnetic recording with excellent thermal stability and to enable super high density recording and to provide a magnetic recorder having it. SOLUTION: The vertical magnetic recording medium is formed by bringing a magnetism stabilization layer having compensation temperature in the vicinity of reproduction temperature into contact with a recording layer. Since switched connection between magnetization of rare earth metals and magnetization of transition metals of the recording layer and the magnetism stabilization layer is performed, two layers as a magnetic layer and the magnetism stabilization layer are regarded as one magnetic material and activation volume in this case becomes for two layers as the recording layer and the magnetism stabilization layer. The magnetic recording medium is excellent in the thermal stability. Coercive force of the recording layer and the magnetism stabilization layer is lowered by heating by irradiation of laser beam and information is recorded by impressing a magnetic field by using a magnetic head in the case of information recording. Since the entire magnetization of the magnetism stabilization layer is zero at the reproduction temperature, the information is reproduced by detecting the magnetization of the recording layer by the magnetic head.