積層二層磁気記録媒体の再生分解能の補正

抄録

  Recently dual-layer MAMR recording is proposed to independently write data in each layer. Readback method by ferromagnetic resonance has been discussed to be available. In this study, a more convenient reading means with a regular shielded MR head was investigated for dual-layer recording based on calculations by reciprocity theorem. We propose the additional bottommost third layer, or assist layer, to equalize the response. Some calculations show that the three-layer recording is effective to apply the half-bit shift parallel recording method, which we reported in the past.