Sumitomo Special Metals Co., Ltd.

Nippon Tungsten Co., Ltd.

Seiichi Hirao

Toshiaki Wada

Mitsuhiko Furukawa

Masaharu Shiroyama

Toyoshige Sasaki

A material for a magnetic head slider consists essentially of 0.1 to 20.0 vol % of at least one of oxides the group Va elements of the International Periodic Table (Ta, Nb, V) and 80.0 to 99.9 vol % of stabilized cubic ZrO.sub.2 containing a stabilizer (Y.sub.2 O.sub.3, MgO, CeO.sub.2). It has improved precision machinability, machining efficiency, high strength, densified structure, affinity with the recording medium or lubricity, besides wear resistance. It may be machined precisely into a thin film magnetic head slider with a reduced amount of chipping.

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Amagasaki, Japan

Seiichi Hirao