| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a magnetic recording medium having excellent electromagnetic conversion characteristics. <P>SOLUTION: The magnetic recording medium comprising alloy nano particles composed of a CuAu type or Cu<SB>3</SB>Au type ferromagnetic regular alloy phase and having 7 to 12 nm particle diameter is characterized in that conditional expression (1): 1,004.8<V×Mr/Hc<2,763.2 is satisfied. In a conditional expression (1), V denotes a particle volume (nm<SP>3</SP>), Mr denotes residual magnetization (kA/m) and Hc denotes coercive force (kA/m). <P>COPYRIGHT: (C)2007,JPO&INPIT |
