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  1. No Access

    Article

    Bismuth titanium indium antimony oxide: A low-temperature-coefficient, high-K dielectric material

    The 1 MHz dielectric properties for mixed-phase polycrystalline ceramics in the system Bi4Ti3O12–Bi(InxSb1x)O3 were reported. In the vicinity of ambient temperature, the dielectric constants for the Sb and In end...

    R. J. Cava, J. J. Krajewski, Y. L. Qin, H. W. Zandbergen in Journal of Materials Research (2000)

  2. No Access

    Article

    Synthesis and Properties of Epitaxial Thin Films of c-axis Oriented Metastable Four-Layered Hexagonal BaRuO3

    We have grown epitaxial thin films of metastable four-layered hexagonal (4H) BaRuO3 on (111) SrTiO3 by 90δ off-axis sputtering techniques. X-ray diffraction and transmission electron microscopy experiments reveal...

    M. K. Lee, C. B. Eom, W. Tian, X. Q. Pan, M. C. Smoak… in MRS Online Proceedings Library (1999)

  3. No Access

    Article

    Advances in GaAs Mosfet’s Using Ga2O3(Gd2O3) as Gate Oxide

    In this article, we review the recent progress on GaAs MOSFET’s using in-situ MBE-grown Ga2O3(Gd2O3) as the gate dielectric. Both depletion-mode (D-mode) and inversion-mode (I-mode) GaAs MOSFET’s with negligible ...

    Y. C. Wang, M. Hong, J. M. Kuo, J. P. Mannaerts, J. Kwo… in MRS Online Proceedings Library (1999)

  4. No Access

    Article

    Effect of Lattice Strain on Growth Mechanisms and Electrical Transport Behavior of Epitaxial CaRuO3 Thin Films

    We have observed both metallic and semiconducting behavior in epitaxial thin films of the metallic oxide CaRuO3 deposited under identical conditions on (100) SrTiO3 substrates of varying crystalline quality. X-ra...

    C. B. Eom, R. A. Rao, Q. Gan, R. J. Cava, J. J. Krajewski… in MRS Online Proceedings Library (1997)

  5. No Access

    Article

    Crystal structure of Y0.95Ca0.05CuO2.54: A new oxygen-deficient perovskite chemically and structurally related to the “123” superconductor

    The crystal structure of Y0.95Ca0.05CuO2.54(1) has been determined by neutron powder diffraction at room temperature. The compound crystallizes with the symmetry of the hexagonal space group P63/m and lattice par...

    I. Natali-Sora, Q. Huang, A. Santoro, R. J. Cava, J. J. Krajewski… in Il Nuovo Cimento D (1997)

  6. No Access

    Article

    Dielectric properties of barium titanium niobates

    The results of measurements of dielectric constants, in the vicinity of ambient temperature, are presented for eight barium titanium niobium oxides (BaTi1+2nNb4O13+4n for n = 0, 1, 2, 3, 4; Ba3Ti4Nb4O21, Ba3Ti5Nb

    G. L. Roberts, R. J. Cava, W. F. Peck Jr., J. J. Krajewski in Journal of Materials Research (1997)

  7. No Access

    Article

    Ln3Cu4P4O2: a New Lanthanide Transition Metal Pnictide Oxide Structure Type

    A new type of lanthanide transition metal pnictide-oxide, Ln3Cu4P4O2 (for Ln = La, Ce, and Nd), is reported. The crystal structure is made from Ln2O2 layers of the Pb2O2 type stacked with layers of Cu2P2 tetrahed...

    R. J. Cava, H. W. Zandbergen, J. J. Krajewski… in MRS Online Proceedings Library (1996)

  8. No Access

    Article

    Dielectric properties of TiO2–Nb2O5 crystallographic shear structures

    The dielectric constants (K) have been measured near ambient temperature for polycrystalline bulk ceramics of the crystallographic shear compounds TiNb24O62, Ti2Nb10O29, and TiNb2O7. These show enhanced K’s over ...

    R.J. Cava, J. J. Krajewski, W. F. Peck Jr., G. L. Roberts in Journal of Materials Research (1996)

  9. 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)

  10. No Access

    Chapter and Conference Paper

    Physical Properties of the New Borocarbide Superconductors

    An overview is given on materials and physical properties of the recently discovered 20K-class layered borocarbide intermetallic superconductors, RETM2B2C (RE=rare-earth, TM=Ni, Pd, Pt). Extensive studies on Lu(Y...

    H. Takagi, R. J. Cava, H. Eisaki, S. Uchida… in Advances in Superconductivity VII (1995)

  11. No Access

    Article

    Neutron Powder Diffraction Refinement of the Nuclear and Magnetic Structures of HoNi2B2C at R.T., 10, 5.1 AND 2.2 K

    The nuclear and magnetic structures of HoNi2B2C have been investigated by neutron powder diffraction at room temperature and at 10, 5.1 and 2.2K. The compound crystallizes with the symmetry of space group 14/mmm ...

    Q. Huang, A. Santoro, T. E. Grigereit, J. W. Lynn… in MRS Online Proceedings Library (1994)

  12. No Access

    Article

    Transparent Conducting Films Grown By Pulsed Laser Deposition

    We have studied the properties of two types of transparent conducting oxides grown by pulsed laser deposition (PLD) on quartz substrates. We have grown films of ITO with resistivity as low as 250 μΩ-cm and wit...

    Julia M. Phillips, R. J. Cava, S. Y. Hou, J. J. Krajewski… in MRS Online Proceedings Library (1994)

  13. 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)

  14. No Access

    Article

    Electrochemical and high pressure superoxygenation of YCuO2+x and LaCuO2+x delafossites

    Electrochemical and high pressure oxygenation experiments are described which extend the range of intercalated oxygen content beyond that accessible in 1 atm O2 treatments for the triangular planar cuprate delafo...

    R. J. Cava, W. F. Peck Jr., J. J. Krajewski, S-W. Cheong… in Journal of Materials Research (1994)

  15. 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)

  16. 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)

  17. 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)

  18. 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)

  19. 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)

  20. No Access

    Article

    Residence times and coverage by surface intermediates during the Fischer-Tropsch synthesis

    Isotope tracing of alkene readsorption has been used to examine reversibility in the growth of higher hydrocarbons in the Fischer-Tropsch synthesis. Some reversibility is indicated, but the degree is insuffici...

    C. A. Mims, J. J. Krajewski, K. D. Rose, M. T. Melchior in Catalysis Letters (1990)

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