Accession Number : ADA268199


Title :   Advanced Thin-Film Deposition and Physical Properties of High- Temperature and Other Novel Superconducting Materials


Descriptive Note : Annual rept. 15 Oct 91-31 Oct 92,


Corporate Author : STANFORD UNIV CA EDWARD L GINZTON LAB OF PHYSICS


Personal Author(s) : Beasley, M R ; Geballe, T H ; Kapitulnik, A


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a268199.pdf


Report Date : 03 Jun 1993


Pagination or Media Count : 10


Abstract : Progress under AFOSR Contract F49620-92-C-0004 for the period 15 October 1991 to 31 October 1992 is reported. Important results include studies of the grain boundaries in a-axis oriented high-Tc superconducting 123 YBCO thin films, the study of the vortex properties of high-Tc single crystals of the superconductor 2212 BSCCO and the artificially structured Mo-Ge/Ge quasi-two- dimensional superconductors. The latter provide an outstanding model system for the study of vortices in highly anisotropic superconductors, such at the high-Tc cuprates, without all the attendant difficult materials problems. Progress in the synthesis and study of the so-called infinite layer cuprate SrCuO4 and the normally conducting oxide SrRuO3 of interest as a barrier materials in high-Tc SNS devices are also reported. Finally we report the development of advanced approaches to rate control of the cation fluxes in the reactive coevaporation of the high-Tc superconductors.


Descriptors :   *PHYSICAL PROPERTIES , *HIGH TEMPERATURE SUPERCONDUCTORS , CONTROL , CATIONS , MATERIALS , SYNTHESIS(CHEMISTRY) , FILMS , CRYSTALS , DEPOSITION , BARRIERS , SUPERCONDUCTIVITY , GRAIN BOUNDARIES , ANISOTROPY , BOUNDARIES , SINGLE CRYSTALS , THIN FILMS , SUPERCONDUCTORS , CONTRACTS , LAYERS


Subject Categories : Inorganic Chemistry
      Electricity and Magnetism


Distribution Statement : APPROVED FOR PUBLIC RELEASE