| 摘要 |
PURPOSE:To obtain a nonmagnetic substrate for magnetic heads for vapor- depositing metallic magnetic films. CONSTITUTION:This nonmagnetic head for magnetic heads is composed basically of CoO and NiO or NiO containing a scandium oxide by 1-5wt.%. The nonmagnetic substrate having such composition has nearly the same characteristics as magnetic film structures have with respect to the coefficient of thermal expansion and hardness. Therefore, the occurrence of delamination and cracks in the magnetic film structures can be remarkably prevented. In addition, when the hardness is further improved, shortening of the service life of magnetic heads, deformation, cracking, etc., of the nonmagnetic substrate can be suppressed and the wear resistance and durability of the heads can be improved. |
