"IAA1010919" . . " point-like disorder" . "0"^^ . . . . " magnetic properties" . . . . "Kritick\u00E9 proudy ve vysokoteplotn\u00EDch supravodi\u010D\u00EDch a zp\u016Fsoby jejich zvy\u0161ov\u00E1n\u00ED a stabilizace" . . . "0"^^ . "critical currents; high-Tc superconductors; point-like disorder; melt- textured superconductors; magnetic properties; RE-123; Bi-Sr-Ca-Cu-O; transportcurrents; vortex pinning"@en . . " high-Tc superconductors" . " Bi-Sr-Ca-Cu-O" . "Z\u00E1kladn\u00EDm z\u00E1m\u011Brem navrhovan\u00E9ho projektu je studium podm\u00EDnek pro optimalizaci a stabilizaci proud\u016F ve vysokoteplotn\u00EDch supravodi\u010D\u00EDch s c\u00EDlem naj\u00EDt takov\u00E9 podm\u00EDnky, za nich\u017E budou tyto materi\u00E1ly p\u0159ijateln\u00E9 a v\u00FDhodn\u00E9 pro technick\u00E9 aplikace. P\u0159edev\u0161\u00EDm bychom cht\u011Bli studovat magnetick\u00FD moment indukovan\u00FD zm\u011Bnou magnetick\u00E9ho pole a rychlost jeho relaxace, efektivitu r\u016Fzn\u00FDch druh\u016F p\u0159\u00EDm\u011Bs\u00ED a up\u00EDnac\u00EDch center, vytvo\u0159en\u00FDch nap\u0159. oza\u0159ov\u00E1n\u00EDm t\u011B\u017Ek\u00FDmi ionty, d\u00E1le transport proudu v p\u00E1sk\u00E1ch BiSeCaCuO a efekty napom\u00E1haj\u00EDc\u00ED udr\u017Een\u00ED tohoto proudu na co nejvy\u0161\u0161\u00ED \u00FArovni. Magnetick\u00E9 a elektrick\u00E9 testy budou dopln\u011Bny podrobn\u00FDmi chemick\u00FDmi a krystalografick\u00FDmi rozbory a mikroskopick\u00FDm studiem morfologie vzork\u016F. V\u00FDsledkem anal\u00FDz relaxa\u010Dn\u00EDch a transportn\u00EDch jev\u016F budou mapy z\u00E1vislost\u00ED kritick\u00E9ho proudu na poli, teplot\u011B a relaxa\u010Dn\u00ED rychlosti, tzv. (J-B-T-E) plochy, pln\u011B charakterizuj\u00EDc\u00ED vlastnosti supravodiv\u00FDch proud\u016F na vzorc\u00EDch." . "2004-10-27+02:00"^^ . "50"^^ . . "50"^^ . " transportcurrents" . . " melt- textured superconductors" . . " RE-123" . "V\u00FDvoj \u0161pi\u010Dkov\u00FDch materi\u00E1l\u016F typu RE1,RE2,RE3)Ba2Cu3O7(RE=vz\u00E1cn\u00E1 zemina) pro permanentn\u00ED supravodiv\u00E9 magnety, objeven nov\u00FD typ up\u00EDnac\u00ED struktury. Teorie elektrick\u00E9ho pole v supravodi\u010Di. Teorie upnut\u00ED toko\u010Dar na velk\u00FDch norm\u00E1ln\u00EDch \u010D\u00E1stic\u00EDch."@cs . "critical currents" . "http://www.isvav.cz/projectDetail.do?rowId=IAA1010919"^^ . "Critical currents in high-Tc superconductors and the ways to their enhancement"@en . "The main objective of the project is study of the conditions for optimisation and stabilisation of critical currents in high-Tc superconductors with the aim to find such conditions that would favorite use of these materials in technical applications.We will study the magnetic moment induced by a change of the external magn.field,its relaxation rate,effectivity of different types of impurities and pinning centres produced artificially e.g.by the heavy ion irradiation,current transport in BiSrCaCuO tapesand the effects facilitating holding of these current at a possibly highest level.Magnetic measurements will be combined with a detailed chemical and crystallographic analyses and microscopic study of the sample morphology.Analyses of the relaxation and transport measurements will results in maps of critical currents dependencies on field,temperature and relaxation rate,so called (J-B-T-E)planes that fully characterise properties of the superconducting currents in the samples."@en . . . "1"^^ .