High Density Magnetic Bubble Memory Techniques.
Abstract
The objective of this basic research effort is to demonstrate the feasibility of a new technology for all solid state large data base memories for airborne/spaceborne applications. The program scope is limited to demonstrating the feasibility of the device functions and bit density capabilities required to meet the system goals. It is the objective of this program to advance one technology into development. Based on an evaluation of the present and potential capabilities of candidate solid state technologies to meet the system goals, magnetic bubble domain technology has been selected as the one to be pursued on this program. The proposed approach makes use of small bubble materials, multilayer, self-biased materials and devices, wafer level integration using hybrid chip designs and fineline lithographic techniques for device fabrication. The effort on small bubble materials research was devoted to: (1) extending the useful temperature range of the 2 micrometers and 1 micrometer bubble diameter materials which were developed in the previous report internal, (2) investigating film growth on 76 mm dia substrates, and (3) demonstrating the capabilities of the materials by device operation. With the successful accomplishment of the above three tasks the small bubbles portion of the materials research effort has been concluded. Materials research has concentrated on the means for improving the performances of self-biased bubble films and on an alternate to CaGe substitution in bubble films.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1978
- Accession Number
- ADA060715
Entities
People
- D. M. Heinz
- L. R. Tocci
- P. J. Besser
- T. Kobayashi
- T. T. Chen