| 摘要 |
PURPOSE:To widen gap length between tips of the second magnetic poles by forming the first magnetic pole on which both side edges facing a gap layer are etched slantingly on a base body and after forming a level difference correcting film around it, forming the second magnetic pole having rectangular sectional form on the first magnetic pole through the gap layer. CONSTITUTION:A magnetic layer 31 is formed on a substrate 11 that becomes a slider, etching peripheral side edge of the magnetic layer 31 excepting the side facing a medium slantingly, and the first magnetic pole 21 having trapezoidal sectional form is formed. it is covered with a nonmagnetic material 32 of the same thickness with the magnetic pole 21, and a resist pattern 33 is formed on it. The surface of the magnetic pole 21 is exposed by etching making the pattern a mask. Then, the resist pattern 33 is removed, and a level difference correcting film 34 is formed. The film 34 is covered with a gap layer 13, and a thin film coil, the second magnetic pole 16 having rectangular sectional form and a protective film 35 are formed on it successively. By cutting and grinding exposed tip faces of magnetic poles 21, 16, wide gap length is constituted. |
