| 摘要 |
PROBLEM TO BE SOLVED: To provide a magnetic recording head in which occurrence of erasing an adjacent track can be suppressed. SOLUTION: A lower part magnetic pole 50 is constituted so as to include a front part 12 and a rear part 17 (having different thickness, rectangle type pillar 51) constituting a step (difference in level), and especially, the rear part 17 is made nearer to an upper part magnetic pole 54 than the front part 12. As magnetic resistance is reduced between the upper part magnetic pole 54 and the lower part magnetic pole 50, surplus magnetic fluxes generated when a recording current is set largely is absorbed in a magnetic flux expansion body 53 without leaking to a side of a recording gap 15. Thereby, as magnetic fluxes become hard to leak at the vicinity of a shoulder region of the lower part magnetic pole 50, strength of a needless magnetic field generated at the vicinity of the shoulder region of the lower part magnetic pole 50 is made small. COPYRIGHT: (C)2005,JPO&NCIPI
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