Magnetic head and method of making the same

Details Magnetic head and method of making the same Magnetic head and method of making the same

1973-06-15

1976-01-06

Eddleman, Alfred H.

Dynamic magnetic information storage or retrieval

Head

Core

29603, 29DIG31, 360122, G11B 514, G11B 5221

Patent

active

039316424

ABSTRACT:
This invention provides a magnetic head constituted by a magnetic core having a winding wound thereon, the magnetic core being a ferrite body composed of crystallites which have (111)-crystallographic planes thereof oriented substantially parallel with each other. The ferrite body is a dense polycrystalline and has much improved wear characteristics. The method of manufacturing the polycrystalline ferrite body includes the steps of mixing starting materials which include an .alpha.-Fe.sub.2 O.sub.3 powder with particles having a thin disc shape and other compounds in the weight ratio of given ferrite composition, cold-pressing the mixture into a cold-pressed body by a uniaxial pressure and sintering the cold-pressed body into a solid body so that the crystallites of the sintered body have the (111) 111)-planes substantially oriented.

REFERENCES:
patent: 2992474 (1961-07-01), Adams et al.
patent: 3663767 (1972-05-01), Shimotori
patent: 3676610 (1972-07-01), Moss et al.

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