Browse Prior Art Database

Thin Magnetic Film Logic

IP.com Disclosure Number: IPCOM000097719D
Original Publication Date: 1961-May-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 28K

Publishing Venue

IBM

Related People

Proebster, WE: AUTHOR [+2]

Abstract

A logical thin film, rotational switching system performing inversion is shown. Three magnetic elements 10, 12 and 14 are positioned one over the other with each exhibiting a similar easy axis of magnetization in the plane of the respective elements.

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Thin Magnetic Film Logic

A logical thin film, rotational switching system performing inversion is shown. Three magnetic elements 10, 12 and 14 are positioned one over the other with each exhibiting a similar easy axis of magnetization in the plane of the respective elements.

Information is written into the system (top left) by initially rotating the magnetization of element 10 into the hard direction. Thereafter, a field M is applied parallel to the easy direction 16 of element 10 (top right), causing the element 10 to assume either one of two directions along its easy axis. The magnetization of elements 12 and 14 is afterwards rotated into the hard direction (bottom left). Under influence of the stray field coupling from element 10, both 12 and 14 assume a state of magnetization opposite to that of the element 10 (bottom right). The elements 10 and 12 now couple one another while the state of the element 14 defines the original information written into element 10 in inverted form.

If information is originally written into each of the elements 10, 12 and 14, then the field provided from the device defines a majority logic manifestation, capable of performing Goto type logic.

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