Matsushita Electric Industrial Co., Ltd.

Fumio Sakai

Koichi Osano

Hitoshi Yamanishi

Isamu Aokura

Yasushi Inoue

Shigeyoshi Takai

A magnetic head includes a back core made of ferrite and a magnetic alloy film arranged in a vicinity of a magnetic gap and having an average composition expressed by TxMyNz wherein T is Fe or Co; M is at least one metal selected from a group consisting of Nb, Zr, Ta, Hf, Cr, W and Mo; N is nitrogen; and x, y and z are atomic percentages holding 65.ltoreq.x.ltoreq.94, 5.ltoreq.y.ltoreq.25, 0&lt;z.ltoreq.20 and x+y+z=100. The head includes an oxygen diffusion prevention part of a higher concentration of nitrogen than included in the whole magnetic alloy film which is provided at the magnetic alloy film at an interfacial part to the ferrite core.

Magnetic head and manufacturing method therefor

In a magnetic head including, a pair of magnetic cores, one of the magnetic cores including a first corner portion, a second corner portion and an end portion between the first and second corner portions, and another one of the magnetic cores including a third corner portion, a fourth corner portion and another end portion between the third and fourth corner portions, the first and third corner portions being opposite to each other, the second and fourth corner portions being opposite to each other, the end portion and the another end portion being opposite to each other, and high-saturation-magnetic-flux-density layers, one of the high-saturation-magnetic-flux-density layers covering the end portion and another one of the high-saturation-magnetic-flux-density layers covering the another end portion, wherein a thickness of the high-saturation-magnetic-flux-density layer on at least one of the first, second, third and fourth corner portions within an important area for preventing a false magnetic head is prevented from being less than 0.5 .mu.m.

Growing community of inventors

Nabari, Japan

Fumio Sakai