Title:
MAGNETIC BUBBLE DOMAIN CHIP
Document Type and Number:
Japanese Patent JPS54146537
Kind Code:
A
Abstract:
A magnetic bubble domain chip having two levels of metallurgy fabricated in a single masking step and including a replicate type bubble generator. The bubble generator includes a magnetic disk which holds a seed domain during reorientation of a magnetic drive field in the plane of the magnetic bubble material, and a conductor located at the leading, i.e., cutting, edge of the magnetic disk. Current in the conductor is used to assist the splitting operation whereby a new domain is split from the stretched seed domain. The conductor includes a first portion having a relatively wide cross-section where most of the current flows through a highly conductive material, such as gold. In the area of the generator, the conductor is narrow and the current path is through the magnetic material comprising the disk. Use of the magnetic material as a conductor path reduces problems due to electromigration and the generator is particularly suitable for use in providing magnetic bubble domains having diameters 2 microns and less.
Inventors:
MAAKU HAWAADO KURIDAA
Application Number:
JP4987579A
Publication Date:
November 15, 1979
Filing Date:
April 24, 1979
Export Citation:
Assignee:
IBM
International Classes:
G11C19/08; G11C11/14; (IPC1-7): G11C11/14; G11C19/08
Domestic Patent References:
| JPS5076945A | 1975-06-24 | |||
| JPS50120927A | 1975-09-22 |
Foreign References:
| US3925769A | 1975-12-09 | |||
| US4079359A | 1978-03-14 |