| 摘要 |
PURPOSE:To obtain a magnetic head constituted so that a joining force of a core half body is strong, and also a gap interval has a high accuarcy, by providing a transition metallic layer on each opposed contact face of a wafer consisting of a pair of alloy magnetic materials, inserting a glass rod into a groove formed on one wafer, pressing and welding it. CONSTITUTION:Grooves 12, 13 and a winding groove 14 for welding are provided on one 11 of a pair of alloy magnetic materials, for instance, sendust wafers, and a transition metallic layer 15 of Ti, etc. is formed on the surface having the grooves 12-14 by an ion plating method. The same transition metallic layer 15 is formed on the opposed contact face of the other wafer 16, too, and thereafter, both the wafers are butted and an SiO2 film 17 for determining a gap lengh 25 is provided on a corner part 18. Subsequently, the wafers 11, 16 are butted, and welded by inserting a lead phosphoric acid compound or barium phosphoric acid compound glass rod 19 into the grooves 12-14 and adding a weight F as indicated with an arrow. In this way, the material of the glass rod 19 permeates into the layer 15, and a strongly joined core block is obtained. The block is cut and divided into each main core chip, a necessary working is performed, and a magnetic head having a high gap accuracy is obtained. |
