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Information × Registration Number 0206U004113, 0103U000176 , R & D reports Title Investigation of superconducting and magnetic properties in perovskite oxides single-crystalline films. popup.stage_title Head Pan V.M.; Prokhorov V.G., Registration Date 10-02-2006 Organization Institute of Metal Physic G.V.Kurdyumov NAS of the Ukraine popup.description2 A report on the research project is consisted of four Sections. All of them have their own objectives, investigation techniques and important results obtained. However, all sections are organically unified by subjects of a study. There are thin metal-oxide films with the similar perovskite-type crystal structure as a general target of interests. The first Section is described the structural study performed by HREM and by EBSD as well as a computer modelling of the growth modes of the perovskite-type films and in particular the films of HTS cuprate YBCO. In the second Section important peculiarities of the nondissipative Cooper-pairs supercurrent transport and pinning/depinning Abrikosov vortices in single-crystalline YBCO films with a statistical network of low-angle dislocation sub-boundaries are described. In the third Section of this research work the high-frequency response of Abrikosov vortices upon the high-frequency fields applied is studied by authors experimentally and theoretically in linearand nonlinear regimes with a use of coplanar as well as micro-strip-line resonators (1-5 GHz). Temperature dependencies of the surface impedance for single-crystal YBCO films are also measured at various frequencies (34 - 135 GHz) and in a wide region of temperatures (18 - 95 K) with a use of end-plate cavity resonator technique. In the fourth Section of the work a nature of the phenomenon of so-called "Colossal Magneto-Resistance" (CMR) in thin films with the perovskite-type crystal structure as well as relevant physics and material science problems are studied. It is shown that basically a mechanism of the CMR-effect in manganite films (e.g. in the film La0.7Ca0.3MnO3 where the CMR-effect at 210 K and applied magnetic field 5 T is as high as 450%) is to be bound with a phenomenon of the double Zener exchange.5635 Product Description popup.authors popup.nrat_date 2020-04-02 Close