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US 5,296,312 AGranted
Non-magnetic substrate material and floating-type magnetic head
AssigneeHitachi Metals, Ltd.
InventorsKunio Kanai, Masashi Yamaguchi
Life of this patent
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Abstract
A non-magnetic substrate material which contains 0.5%-3% of Al.sub.2 O.sub.3 and 3%-16% of at least either ZnO or SnO.sub.2 (but with ZnO+SnO.sub.2 <=16%) in addition to components of 45%-60% of TiO.sub.2, 5%-20% of BaO and 20%-35% of CaO, and a floating-type magnetic head with a slider made of the above-mentioned non-magnetic substrate material.
Claims11
A non-magnetic substrate material comprising:
- 0.5%-3% of Al.sub.2 O.sub.3 and 3%-16% of one or a mixture of ZnO or SnO.sub.2 under the condition that the total amount of ZnO and SnO.sub.2 is equal to or less than 16%, in addition to main components of 45%-60% of TiO.sub.2, 5%-20% of BaO and 20%-35% CaO by weight.
A floating-type magnetic head slider comprising:
- a non-magnetic substrate material with main components of 45%-60% of TiO.sub.2, 5%-20% of BaO and 20%-35% CaO by weight, and further components of 0.5%-3% of Al.sub.2 O.sub.3 and 3%-16% of one or a mixture of ZnO or SnO.sub.2 under the condition that the total amount of ZnO and SnO.sub.2 is equal to or less than 16%.
Dependencies are inferred from the claim text.