Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

Bubble State Detector

IP.com Disclosure Number: IPCOM000086348D
Original Publication Date: 1976-Aug-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 34K

Publishing Venue

IBM

Related People

Gitschier, JM: AUTHOR [+2]

Abstract

Bubble State detectors in the past have been designed to measure the angle of deflection of a bubble in a gradient (inhomogeneous) magnetic field, as indicated in Fig. 1.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

Bubble State Detector

Bubble State detectors in the past have been designed to measure the angle of deflection of a bubble in a gradient (inhomogeneous) magnetic field, as indicated in Fig. 1.

It has been observed that another means of propagating bubbles results in larger state-related differences in motion. In an ion-implanted film a DC in-plane field is applied, in addition to the usual bias field. When a pulsed or RF field orthogonal to the film plane is superposed on the bias field, the bubbles are observed to move as shown in Fig. 2.

In particular, the S=l bubble moves perpendicular to the in-plane field; the S=1/2 bubble moves at an angle of 135 degrees with respect to the in-plane field; the S=0 bubble remains stationary. Thus time varying but spatially homogeneous fields produce large differences in bubble behavior, useful for state determination.

1

Page 2 of 2

2

[This page contains 3 pictures or other non-text objects]