| pplications of high-temperature superconducting films in instrumentation were investigated. A comprehensive literature review of the performance of conventional electronics at liquid nitrogen temperature and applications of high-temperature superconductors was conducted. Common deposition techniques for high-temperature superconducting thin films and thick films were reviewed.;Film characterization methods included: a four-point probe resistivity measurement on films from room temperature down to approximately 20K, thickness measurement, x-ray diffraction, and scanning electron microscopy.;Several low-noise amplifiers that can operate at liquid nitrogen temperature were developed. The amplifier circuits use commercially available components. These amplifiers could be used in measurement applications where a low-noise amplifier must be placed close to a transducer immersed in liquid nitrogen. A low-noise magnetically shielded front-end circuit was proposed using the amplifiers and EMI shields developed in this dissertation.;Polycrystalline... |
