| 摘要 |
PURPOSE:To obtain a magnetic head which can use satisfactorily a magnetic tape having high reluctance force by securing such a structure where a metallic magnetic substance of high saturated magnetic flux density is held between oxide magnetic substances having high permeability. CONSTITUTION:The glass 3 having a high melting point as well as high wear resistance is filled into a groove 2 of a plate 1 made of a ferrite magnetic material. Then a glass film 4 is produced by sputtering the glass of the same quality as the glass 3. The SiO2, etc. having affinity with the film 4 with a high melting point is sputtered on both sides of a thin metallic magnetic substance 5 for formation of a nonmagnetic thin film 6. Then these plates 1 and substances 5 are laminated alternately and pressed with heating to obtain a monolithic lamination layer substance 7. This substance 7 is cut into core half blocks 8. A quartz glass film 12 is sputtered on the surface between grooves 9 and 11. While a glass layer 13 of a low melting point is formed between grooves 10 and 11 and also on the edge side surface of the groove 10. Then blocks 8 are butted with each other and the glass rods having a lower working point than the glass 3 and a heat expansion coefficient approximately equal to that of the plate 1 are put into both grooves 9 and 10 and then pressed with heating. Thus a composite magnetic head block 15 is obtained.
|
