Dynamic magnetic information storage or retrieval – Head – Head surface structure
Patent
1989-09-15
1991-07-09
Wolff, John H.
Dynamic magnetic information storage or retrieval
Head
Head surface structure
360110, 360125, G11B 5187
Patent
active
050310640
ABSTRACT:
In a magnetic head for use in recording and/or reproducing information for a magnetic recording medium, the magnetic head comprising a magnetic core and a non-magnetic slider member, the slider member having a principal surface to face the magnetic recording medium when information recording and/or reproducing are effected for the magnetic recording medium, the non-magnetic slider member is made of a ceramic material essentially consisting of ZrO.sub.2 in order to improve durability and wear-resistance. The ceramic material can contain 27-70% Al.sub.2 O.sub.3 on a base of weight ratio while the balance is substantially ZrO.sub.2. The ZrO.sub.2 can be partially replaced by at least one selected from a group of Y.sub.2 O.sub.3, CaO, and MgO, within a range of 2-17% on a base of molecular ratio.
REFERENCES:
patent: 4598052 (1986-07-01), Wada et al.
patent: 4649448 (1987-03-01), Nakajima et al.
patent: 4660114 (1987-04-01), Yamakawa et al.
patent: 4681813 (1987-07-01), Yamada et al.
patent: 4734802 (1988-03-01), Higuchi et al.
patent: 4858043 (1989-08-01), Kadokura et al.
Ashikawa Masataka
Miura Masahiko
Ogasawara Shuji
Tokin Corporation
Wolff John H.
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