Patent ID: 6770359
Filing Date: 2004-08-03
Classification: G11B,Y10T

Abstract:
A magnetic recording medium comprising a support having provided thereon a nonmagnetic layer containing a nonmagnetic powder dispersed in a binder and a magnetic layer containing a ferromagnetic powder dispersed in a binder provided on the nonmagnetic layer, wherein the magnetic layer comprises a hexagonal ferrite powder having an average tabular diameter of from 10 to 35 nm, a coercive force (Hc) of from 135 to 400 kA/m, SFD (Switching Field Distribution) (25Â° C.) of from 0.40 to 0.90, and &Dgr; SFD [SFD (100Â° C.)âˆ’SFD (25Â° C.)] of from âˆ’0.15 to 0.20.