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RESEARCH ON THE APPLICATION OF FERRO- AND FERRIELECTRIC PHENOMENA IN COMPUTER DEVICES,
CATHOLIC UNIV OF AMERICA WASHINGTON D C
The discovery of the AB03 type or perovskite type ferrielectrics exhibiting a threshold switching field and the valuable results gained during the first phase of this investigation permitted the extension of work to find new materials exhibiting similar properties. This led to the discovery of a second class of ferrielectrics, the MBO type or Mixed Bismuth Oxides type ferrielectrics, with highly useful electrical and technological properties. The objective of this research was to demonstrate that capacitor elements composed of ferrielectrics of the MBO type employed as dielectric represent an important improvement as compared to ordinary ferroelectric capacitors and that they can be utilized as a computer logic device. Fabrication techniques of these ferrielectric devices are discussed. Certain applications were explored such as the development of field controlled polarization transfer devices. Ferri-resonance flip-flop devices and a shift register using these flip-flops are also presented. Finally, a non-contact readout method was investigated utilizing a novel vibrating electrode solid state electrometer. Author
AF33 657 8871