Browse Prior Art Database

High Speed Bubble Generator

IP.com Disclosure Number: IPCOM000079019D
Original Publication Date: 1973-Apr-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 23K

Publishing Venue

IBM

Related People

Bogholtz, WE: AUTHOR [+7]

Abstract

At the present time, high-speed generation of magnetic bubble domains in the 1 MHZ range is difficult due to the long path length that the mother bubble must travel. This problem of high-speed bubble generation may be alleviated by nucleating bubbles at will in a desired position.

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High Speed Bubble Generator

At the present time, high-speed generation of magnetic bubble domains in the 1 MHZ range is difficult due to the long path length that the mother bubble must travel. This problem of high-speed bubble generation may be alleviated by nucleating bubbles at will in a desired position.

A proposed structure to cause nucleation at will is illustrated. One large area 10 and two I-bar structures 12 and 14, all made of permalloy are shown. When a field in the X and Y direction, as shown, is applied, the permalloy area 10 is switched to a diagonal direction, a 45 degrees angle. This action, along with a small field added in the X direction, nucleates a bubble at the spot marked as the nucleating region. As the in-plane field continues to rotate, the bubble is pulled along the propagate path. This may also be utilized as a method of writing in 1's and 0's.

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