| 摘要 |
PURPOSE:To obtain a magnetic head which has excellent electromagnetic conversion characteristics to a high-hardness recording medium and has a good sliding wear characteristic by using a nonmagnetic substrate material consisting of am MnNiO2 system as the substrate of a thin-film magnetic head. CONSTITUTION:The compsn. of MnO and NiO which are essential components is composed, by molar %, of 20%<MnO<40%, 60%<NiO<80%. This material is so formed that the content of Fe with respect to the essential components is below 0.5wt.% in terms of formula of Fe2O3. Namely, the hardness is enhanced by increasing the ratio of the NiO and the magnetization rate is prevented from increasing by confining the content of the Fe to <0.5%. The nonmagnetic substrate material having the excellent wear resistance is obtd. in this way. |
