Patent ID: 6780530
Filing Date: 2004-08-24
Classification: B82Y,C22C,G11B,H01F,Y10S,Y10T

Abstract:
A magnetic head comprising a recording head including first and second magnetic cores sandwiching therebetween a recording gap, and a writing coil for generating a magnetic flux in said first and second magnetic cores and a writing magnetic field in said recording gap, said second magnetic core comprising a first magnetic layer made of a first magnetic material and a second magnetic layer formed on said first magnetic layer, said first magnetic material comprising a component thereof expressed by a formula CoNiFeX, wherein X is at least one element selected from the group consisting of Cr, Ti, V, Ru, Rh, Pd, Os, Ir and Pt, and wherein weight percentages a, b, c and d of Co, Ni, Fe and X contents, respectively, in said component are such that 40%&lE;a&lE;10%, 5%&lE;b&lE;20%, 10%&lE;c&lE;30%, and 0%