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  1. No Access

    Article

    Superconductivity near 30 K without copper: the Ba0.6K0.4BiO3 perovskite

    It is well known that the breakthrough of Bednorz and Müller1 in discovering superconductivity in (La, Ba)2CuO4 was inspired in part by their knowledge of the superconducting properties of Ba(Pb, Bi)O3 (ref. 2). ...

    R. J. Cava, B. Batlogg, J. J. Krajewski, R. Farrow, L. W. Rupp Jr, A. E. White… in Nature (1988)

  2. No Access

    Article

    Superconductivity near 70 K in a new family of layered copper oxides

    A new family of high-temperature superconductors is described, with the general formula Pb2Sr2ACu3O8+δ. Although they have the planes of CuO5 square pyramids characteristic of the other copper-oxide superconducto...

    R. J. Cava, B. Batlogg, J. J. Krajewski, L. W. Rupp, L. F. Schneemeyer… in Nature (1988)

  3. No Access

    Article

    Synthesis of bulk superconducting YBa2Cu4O8 at one atmosphere oxygen pressure

    THE well-known 90-K superconductor Y2Ba2Cu3O7 ('123') is the first (n = 0) member of a homologous series of compounds with the general formula Y2Ba4Cu6+nO14+n. These compounds combine layers of copper–oxygen pyra...

    R. J. Cava, J. J. Krajewski, W. F. Peck Jr, B. Batlogg, L. W. Rupp Jr… in Nature (1989)

  4. No Access

    Article

    Superconductivity at 3.5 K in BaPb0.75Sb0.25O3: why is Tc so low?

    SUPERCONDUCTING BaPb0.75Bi0.25O3, with a transition temperature (Tc ) of 12 K (ref. 1), is now widely viewed as the precursor to the recent appearance of copper oxide superconductors with record high Tc S. The ob...

    R. J. Cava, B. Batlogg, G. P. Espinosa, A. P. Ramirez, J. J. Krajewski… in Nature (1989)

  5. No Access

    Article

    Superconductivity at 60 K in La2-xSrxCaCu2O6: the simplest double-layer cuprate

    STARTING with the pioneering work of Bednorz and Müller1, many copper-oxide-based superconductors with high transition temperatures (Tc) have been discovered. All contain layers of copper-oxygen squares, pyramids...

    R. J. Cava, B. Batlogg, R. B. van Dover, J. J. Krajewski, J. V. Waszczak… in Nature (1990)

  6. No Access

    Article

    Antiferromagnetism and metallic conductivity in Nb12O29

    AT the heart of the controversy about the microscopic origin of superconductivity in high-transition-temperature copper oxide superconductors is the question of whether or not the antiferromagnetism associated...

    R. J. Cava, B. Batlogg, J. J. Krajewski, P. Gammel, H. F. Poulsen, W. F. Peck Jr… in Nature (1991)

  7. No Access

    Article

    Superconductivity at 23 K in yttrium palladium boride carbide

    COPPER oxide compounds have dominated superconductivity research since 1986 because of their very high transition temperatures (Tcs). In contrast, no new families of high-Tc intermetallic compounds have been disc...

    R. J. Cava, H. Takagi, B. Batlogg, H. W. Zandbergen, J. J. Krajewski… in Nature (1994)

  8. No Access

    Article

    The crystal structure of superconducting LuNi2B2C and the related phase LuNiBC

    SUPERCONDUCTING intermetallic compounds with relatively high transition temperature (Tc) have been found in the systems Ln–Tr–B–C, where Ln is a lanthanide element (Y, Ho–Lu) and Tr a transition metal (Pd or Ni)1...

    T. Siegrist, H. W. Zandbergen, R. J. Cava, J. J. Krajewski, W. F. Peck Jr in Nature (1994)

  9. No Access

    Article

    Superconductivity in the quaternary intermetallic compounds LnNi2B2C

    THE attainment of unprecedentedly high transition temperatures (Tcs) in the copper oxide superconductors illustrates how working with more complex chemical systems allows greater opportunity to balance opposing f...

    R. J. Cava, H. Takagi, H. W. Zandbergen, J. J. Krajewski, W. F. Peck Jr… in Nature (1994)

  10. No Access

    Article

    Superconductivity in lanthanum nickel boro-nitride

    RESEARCH into intermetallic superconductors has recently been reinvigorated by the discovery of superconductivity at 23 K in a Y–Pd–B–C quaternary alloy1 (tying with the long-standing inter-metallic record held b...

    R. J. Cava, H. W. Zandbergen, B. Batlogg, H. Eisaki, H. Takagi, J. J. Krajewski… in Nature (1994)

  11. No Access

    Article

    Enhancement of the dielectric constant of Ta2O5through substitution with TiO2

    MICROELECTRONICS research is in large part driven by the demand for smaller components with enhanced performance. For capacitive components, which form the basis of many memory devices, the dielectric constant...

    R. F. Cava, W. F. Peck Jr, J. J. Krajewski in Nature (1995)