| 摘要 |
PURPOSE:To eliminate partial wear of a magnetic layer, to prevent peeling of crack of a protection layer and to attain excellent corrosion resistance by specifying the major component of the protection layer. CONSTITUTION:As the major component of a protection layer 16 of a thin film magnetic head, two kinds of 20 - 95mol% of ZrO2, TiO2 and SiO2 or over and one or two kinds of 5 - 80mol% of WO3 and MoO3 are used. Since the Vickers hardness Hv of the protection layer 16 is within nearly 400 - 750kg/mm<2>, the layer 16 is not too soft, the matching of wear for Co group amorphous or 'Sendust(R)' or the like (Hv is nearly 650kg/mm<2>) used for conventional magnetic layers 14, 15 is caused. Even when the protection layer 16 is directly formed by the sputtering or the like, distortion is small and peeling or crack is prevented. |
