| 摘要 |
PURPOSE:To obtain a magnetic recording medium having adequate coercive force and excellent temp. stability by maintaining the change in the coercive force of the magnetic recording medium coated with a specific resin compsn. within a 20-90 deg.C range at the change within a specific range. CONSTITUTION:The change in the coercive force of the magnetic recording medium formed by coating the resin compsn. contg. the fine particle powder of Ba-contg. planar magnetoplumbite type ferrite having the compsn. A0.n[(Fe1-xMx)2O3] (where, A is Ba or Ba and Sr, M is Zn and Ti or Zn, Co and Ti, n=6.5-11.0, x=0.05-0.25) in the 20-90 deg.C range is maintained within a -2.0Oe-+2.0Oe/ deg.C. The medium coated with the fine particle powder of the planar magnetoplumbite type ferrite having the adequate coercive force and the excellent temp. stability is thereby obtd. |
