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Information × Registration Number 0215U000302, 0110U006099 , R & D reports Title Nanostructutres in 2D superconducting cuprate films doped with nanoparticles, their effect on electrical transport properties of biaxially ordered nanostructured high-temperature superconductors (HTS), interaction of magnetic flux quanta with nanoparticles of different dimensionality in HTS films and development of long-length HTS materials with high critical temperature (Tc 90 K) and high critical current density ( 10 A/cm ) at 78 K for lossless electrical networks in Ukraine. popup.stage_title Head Kordyuk Alexander Anatoliyovych, Доктор фізико-математичних наук Registration Date 05-02-2015 Organization Institute for metal physics NAS Ukkraine popup.description2 The two-beam pulse laser deposition technology was developed for production of nanostructured HTS YBCO films which contain implanted nanoparticles of BZO dielectric phase and are of considerable interest for the modern electrical engineering and electronics. The new experimental method for transport studies of HTS films was developed and realized. This method permits an implementation of current-voltage characteristics (CVC) measurements on HTS films for both dc and pulse current experimental regimes, as well as determination of the ac differential resistance at different points of dc CVC within the frequency range 1Hz-20kHz. The latter allows examinatin of the resistive state nature, mechanisms of pinning and creep of Abricosov vortices in HTS films with a different nanostructure. For the first time the significant increase of the linear response range in microwave experiments was observed for HTS YBCO films containing nanoparticles of BZO phase. The theoretical model of the Abrikosov elastic vortex string depinning from an extended c-oriented linear defect in a 3D anisotropic superconductor under the transport current action was developed. The depinning critical current and vortex activation energy Uc(j), which determines the form of current-voltage characteristics, are calculated for a superconductor with extended linear defects at weak magnetic fields and large enough values of the transport current. Also, dependence of the critical current on the misorientation angle of neighboring grains in HTS films and bicrystals with low-angle [001] tilt dislocation grain boundaries was calculated. These results are in agreement with a set of experimental data obtained on HTS film materials. Product Description popup.authors Каленюк Олексій Андрійович Камінський Георгій Григорович Касаткін Олександр Леонідович Мацуй Володимир Ігоревич Москалюк Вячеслав Олегович Ребіков Андрій Іванович Тарасов Валерій Федорович Третьяченко Костянтин Георгійович Фліс Віктор Семенович Футимський Сергій Іванович popup.nrat_date 2020-04-02 Close