Tdk Corporation

Kouichi Terunuma

Masahiro Miyazaki

Hiroaki Kawashima

A magnetic head includes a reproducing head comprising a leading magnetic shield film, an insulator, a magnetoresistance film, an insulator, and a trailing magnetic shield film formed on a substrate from the substrate to a trailing direction. The leading magnetic shield film is made of a soft magnetic thin film having an atomic ratio composition of the formula: T.sub.(100-x-y) M.sub.x N.sub.y wherein T is Fe, Co, Ni or a mixture thereof, M is B, Al, Si, Ti, V, Cr, Y, Zr, Nb, Mo, Ru, Hf, Ta, W or a mixture thereof, N is nitrogen, 0.1.ltoreq.x.ltoreq.25 and 0.1.ltoreq.y.ltoreq.25 or a soft magnetic thin film consisting essentially of 60 to 80 at % of Fe, 5 to 15 at % of Al, 10 to 25 at % of Si, and 0.1 to 20 at % of N. The magnetic head having such a shielded MR head is more durable and increased in productivity and yield.

Magnetic head including a reproducing head utilizing a magnetoresistance

The thin film of the invention for use in a magnetic head has an atomic ratio composition of the formula:

Magnetic head-forming thin film

The soft magnetic thin film of the invention has an atomic ratio composition of the formula:

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Tokyo, Japan

Kouichi Terunuma