MAGNETIC RECORD MEDIUM AND MAGNETIC STORAGE APPARATUS

摘要

PURPOSE: A magnetic record medium is provided to realize a high-density record by realizing a medium structure that a temperature variation of a saturated magnetization at an operation temperature range is less and that a temperature variation of a record reproduce characteristic is less. CONSTITUTION: In a magnetic record medium for forming a magnetic record film on asubstrate, a magnitude Ms of a film average of a saturation magnetization of the magnetic record film at an absolute temperature(T) 5K and a magnitude Ms of a film average of a saturation magnetization of the magnetic record film at an absolute temperature(T) 300K satisfies a relationship of Ms(T=300K)/Ms(T=5K) is greater than or equal 0.75.