Exploratory Development of Magnetic Bubble Domain Material for Application in Air Force Solid State Mass Memory Systems.
Final rept. 27 Nov 72-30 Nov 74,
ROCKWELL INTERNATIONAL CORP ANAHEIM CALIF ELECTRONICS RESEARCH DIV
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The objectives of this program were to develop bubble domain materials which perform in a military environment and meet device goals of a bit density of 1M bitsq. in., a data rate of 1 MHz and an operating temperature range of -25 to 75C. All of these program objectives have substantially been met. The military environment was considered to consist of extremes of temperature, dynamic mechanical stress and radiation. Bubble device operation over the temperature range of -25 to 75C was addressed in the design of garnet compositions. The effects of shock and vibration were explored on bubble domain garnet films, and results were obtained that revealed the absence of potentially deleterious magnetomechanical effects. Radiation studies on a related program which was coordinated with this one show the bubble garnets to be very tolerant of nuclear radiation. Thus bubble domain garnet materials should perform satisfactorily in such an environment.
- Computer Hardware
- Solid State Physics