| 摘要 |
PURPOSE:To obtain a head having excellent mechanical strength and wear resistance and good magnetic characteristics by forming films for preventing reaction of a low m.p. glass for forming a gap with a magnetic material between said glass and the magnetic material on the opposite surfaces for constituting a gap of a magnetic head with which a metallic magnetic material is used as cores. CONSTITUTION:Dense SiO2 films 4, 4 are formed by sputtering SiO2 in gaseous Ar contg. O2 on the front and rear surfaces 3, 3 constituting a gap of a pair of magnetic cores 1, 1 consisting of a magnetic metallic material having a U-shaped section. Low-melting glass of PbO-B2O3 or the like is then sputtered thereon and both cores 1, 1 are mated and the cores are joined by pressing and heating. The glass 5 diffuses into the films 4 and the magnetic gap is obtd. without arrival of the glass at the magnetic metallic material. The head having high resistance to wear and strength is thus obtd. without reaction of the components of the glass 5 with the cores 1. A stable oxide such as Al2O3, TiO2 or the like or BN, SiC, etc. may be used in place of SiO2 for the films 4, 4. |
