Browse Prior Art Database

Making Ferrite Core Glass Storage Plane

IP.com Disclosure Number: IPCOM000093785D
Original Publication Date: 1966-Feb-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 59K

Publishing Venue

IBM

Related People

Schwartz, B: AUTHOR

Abstract

A solid state ferrite storage device is provided in which positive isolation between storage cells is available. In forming the device, a ferrite material such as magnesium-manganese ferrite, copper-manganese ferrite or another square-loop ferrite composition is used.

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Making Ferrite Core Glass Storage Plane

A solid state ferrite storage device is provided in which positive isolation between storage cells is available. In forming the device, a ferrite material such as magnesium-manganese ferrite, copper-manganese ferrite or another square- loop ferrite composition is used.

A fine grained mixture of the selected composition is combined with less than 6 percent by weight of a short-chain fatty acid and is wetted with a predetermined amount of mineral spirit solvents. The mixture is extruded to form green tubes, depicted in drawings A and B as element 2. Then tubes 2 are fired in order to induce the required magnetic properties and then are selectively placed in mold
4.

Glass 6 having a coefficient of expansion matching that of ferrite tubes 2 is placed between the tubes and melted. Capillary action fills the interstices with glass 6 and simultaneously bonds the same to tubes 2. This results in a structure which has alternate rows of tubes 2 separated by glass interstices 6. The block of fired tubes 2, imbedded in glass 6 is then sliced to form memory planes of separate cores held by glass 6 as shown in B. One set of drive lines X is threaded through tubular apertures 10. A second series of drive lines Y is printed over the surface of the matrix. In this fashion, a storage matrix of ferrite members and conductors is formed.

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