Magnetic head assembly with ferrite core

Details Magnetic head assembly with ferrite core Magnetic head assembly with ferrite core

1979-12-17

1981-11-03

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Head

Head surface structure

360103, 29603, G11B 522, G11B 542

Patent

active

042988993

ABSTRACT:
A magnetic head assembly includes a ferrite core sandwiched between two ceramic layers. Alumina films are deposited by sputtering on the sides of the ferrite core and on the ceramic layers in one structure, and on the ferrite core only in another structure, which are then bonded to form an integral head assembly. Slots to provide flying height control are formed in the air bearing surface of the ceramic layers. The process of making the assembly includes the steps of sputter etching the ferrite and ceramic prior to the deposition of the alumina.

REFERENCES:
patent: 3126615 (1964-03-01), Duinker
patent: 3479738 (1969-11-01), Hanak
patent: 3544982 (1970-12-01), Hanak
patent: 3610837 (1971-10-01), Brede et al.
patent: 3735052 (1973-05-01), Hodgendoorn et al.
patent: 4219853 (1980-08-01), Albert et al.

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