US 6,027,824 A · Magnetic head with low non-linear transition shift

Abstract

A magnetic head with low non-linear transition shift, excellent recording capability at high-frequency bands and good reproduction efficiency is disclosed. A second metallic magnetic layer of an FeMN system (M : at least one element selected from the group consisting of Ti, Zr, Hf, Nb, Ta and Cr) is formed on the surface facing the gap of the leading-side magnetic core of the magnetic head. On the surface facing the gap of the trailing-side magnetic core of the magnetic head provided is a first metallic magnetic layer of an FeMN system (M : at least one element selected from the group consisting of Ti, Zr, Hf, Nb, Ta and Cr) having a higher saturation magnetic flux density than the second metallic magnetic layer. These two cores are butted against each other via a non-magnetic material and bonded with bonding glass.

Claims9

Dependent claims

A magnetic head with low non-linear transition shift comprising;

two magnetic cores made of single crystal ferrite which face each other with a magnetic gap therebetween,
a first metallic magnetic layer, having thickness equal to or more than 1.5 .mu.m and equal to or less than 7.5 .mu.m, being disposed on one of the magnetic cores and adjoining the magnetic gap and a second metallic magnetic layer, having thickness equal to or more than 1.5 .mu.m and equal to or less than 7.5 .mu.m, being disposed on the other of the magnetic cores and adjoining the magnetic gap;
wherein
1.4 T.ltoreq.Bs1.ltoreq.1.8 T,
1.2 T.ltoreq.Bs2.ltoreq.1.6 T and
Bs1-Bs2.gtoreq.0.2 T;
where
Bs1:
saturation magnetic flux density of the first metallic magnetic layer and Bs2:
saturation magnetic flux density of the second metallic magnetic layer.

7 more elements

Dependencies are inferred from the claim text.

Magnetic head with low non-linear transition shift

Life of this patent

Magnetic head with low non-linear transition shift

Life of this patent

Abstract

Claims9