| abstract |
(57) [PROBLEMS] To reproduce a magnetic recording medium using fine hexagonal ferrite using an MR head, which has a short wavelength output and good C / N and stable recorded magnetization. To provide a magnetic recording medium. In a magnetic recording medium, a nonmagnetic layer in which nonmagnetic powder is dispersed in a binder is provided on a support, and a magnetic layer in which ferromagnetic powder is dispersed in the binder is further provided. Plate diameter is 10-35nm, coercive force Hc is 135-400k A / m and SFD (25 ° C.) is 0.40-0. 90 and ΔSFD = SFD (100 ° C.) − SFD (2 5. A magnetic recording medium having a magnetic layer containing hexagonal ferrite powder having a temperature of 5 ° C. of −0.15 to 0.20. |