| 摘要 |
PURPOSE:To obtain a steep perpendicular magnetic field component, to reduce the shifting quantity of a gap and to obtain high performance by using a mag netic thin film held by a substrate as trailing side magnetic cores. CONSTITUTION:A gap surface direction 22 is inclined by an angle theta in a medium travelling direction 31 for a normal line direction 21 of head sliding surface, and for a magnetic core 3 at a trailing side, a magnetic thin film 11 with large saturated magnetic flux density is used. The magnetic pole thickness (t) of the magnetic core 3 is limited to t<10g((g) is gap thickness), a high hardness material is used and the gap surface direction 22 and the substrate surface direction are made non-parallel only by a gap inclination angle theta. Thus, under the conditions of the small gap inclination angle, the perpendicular magnetic field component suitable for the perpendicular recording is obtained, and without damaging a reproducing efficiency, the shifting quantity of the gap position can be reduced accompanying to wear of the head. |
