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Information × Registration Number 0203U006580, 0100U002128 , R & D reports Title Dissipative and the resonance phenomena at movement and flow of a current in superconductors popup.stage_title Head Volodimir Mihailovich Pan, Registration Date 17-06-2003 Organization Institute for metal physics NAS Ukkraine popup.description2 Research subject: thin epitaxial quasi-single-crystalline films of high-temperature superconductor (HTS) YBaCuO for high-current and microwave applications. Research objective: Determination of structure defects influence, especially that of edge dislocations forming domain boundaries, on electromagnetic, electrodynamical, and microwave properties of the epitaxial HTS quasi-single-crystalline films; in particular, the influence on dissipative and resonance phenomena during motion of vortices, which are dominant for the superconductor behavior. Search for optimal manufacturing conditions to achieve the highest critical currents and the lowest microwave losses. Investigation technique: combined theoretical and experimental studies of the structure and electrical and other physical properties of the films. A perfect technology of the HTS YBCO epitaxial quasi-single-crystalline films manufacturing is developed, including that for double-sided large films. This allows to use the films not only for investigations but also for microwave applications. The nanostructure of the films is carefully studied by means of HREM and XRD. The obtained films have a record breaking critical current in applied magnetic field up to 4 T. New theoretical models are developed to comprehend critical and microwave resistance limitations in the HTS films. High density edge dislocations are shown to be a main factor, which determines resistive and microwave behavior of the YBCO films. Properties of the HTS/gold interface is investigated. Prototypes of microwave devices are designed and manufactured. Product Description popup.authors popup.nrat_date 2020-04-02 Close