Magnetic head including an apex portion with two chamfered portions having optimized angles

摘要

A magnetic head is provided with an apex portion having a first and second chamfered portion, both formed in a C core. The first chamfered portion has a first apex angle alpha at a position corresponding to a predetermined gap depth. The first chamfered portion also has a predetermined apex length. The second chamfered portion is contiguous to the first chamfered portion and has second apex angle beta which is smaller than the first apex angle alpha . The first apex angle alpha is greater than or equal to 70 DEG and less than 80 DEG .