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  1. No Access

    Chapter

    NMR Study of the Tl-Based High-Tc Cuprate Tl(Ba,Sr)2(Y,Ca)Cu2O7 in a Wide Hole Concentration Range from the Antiferromagnetic to the Overdoped Region

    Many studies on high-T c cuprates conducted in this decade have repeatedly emphasized universality in the electronic phase diagram. Undoped cuprates are, as is well known, insulators and are two-d...

    T. Goto, S. Nakajima, Y. Syono, T. Fukase in Materials Science in Static High Magnetic … (2002)

  2. No Access

    Chapter and Conference Paper

    Crystal growth of (Bi,Pb)2Sr2CaCu2Oz and their superconducting properties

    Superconducting single crystal of Bi2Sr2CaCu2Oz was grown from stoichiometric melt composition. The effect of Pb-do** on the superconducting properties was studied. The superconducting transition temperature (T

    H. Faqir, M. Mansori, M. Kikuchi, Y. Syono, P. Satre… in Advances in Superconductivity XI (1999)

  3. No Access

    Chapter and Conference Paper

    Relation between superconductivity and oxidation state Pb of (Pb,Cu)Sr2(Ca,Y)Cu2Oy and (Pb,Cu)(Sr,La)2CuOy studied by chemical analysis and XPS measurements

    Chemical analysis by K2Cr2O7 titration and the binding energy measurement of Pb 4f7/2 by XPS were applied for the evaluation of valence state of Pb in (Pb,Cu)Sr2(Ca,Y)Cu2Oy and (Pb,Cu)(Sr,La)2CuOy. Correlation be...

    M. Kikuchi, M. Nagoshi, M. Shida, K. Kanehashi… in Advances in Superconductivity XI (1999)

  4. No Access

    Chapter and Conference Paper

    YSr2Cu3-xMxOy (M= Fe and Mo) Ceramics Studied by Photoemission

    We have investigated superconducting properties and electronic structures of YSr2Cu3-x M x O y (M= Fe and Mo) ceramics with var...

    N. Sanada, T. Honjo, S. Shimizu, Y. Suzuki, Y. Fukuda… in Advances in Superconductivity X (1998)

  5. No Access

    Article

    Cu/Tl-NMR study on the non magnetic impurity effect in Tl-based high-T c cuprate TlBa2Ca(Cu1−zZnz)2 O7+δ (Tl1212)

    Cu-NMR study has been performed on the Zn-substituted TlBa2Ca(Cu1−zZnz)2O7+δ belonging to the over-doped region. The temperature dependence of the Knight shift was successfully explained in terms of the partially...

    T. Goto, S. Nakajima, M. Kikuchi, Y. Syono, T. Fukase in Czechoslovak Journal of Physics (1996)

  6. No Access

    Chapter and Conference Paper

    Photoemission and Inverse-photoemission Studies on Metal-insulator Transition of Bi-2201 Ceramics

    Measurements of x-ray (XPS) and inverse-photoemission (IPES) spectroscopy have been performed on polycrystalline Bi2Sr2-xMxCuOy (M=La, Nd, and Gd, 0.4 ≤ x ≤ 0.9) ceramics in which metal-insulator transition is ob...

    N. Sanada, Y. Suzuki, M. Shimomura, Y. Fukuda… in Advances in Superconductivity VIII (1996)

  7. No Access

    Chapter

    Shock Effects on Structural and Superconducting Properties of High Tc Oxides

    Shock compression technique has been applied for the research of high Tc oxides in several different ways. Synthesis of high Tc oxides from component oxides by means of shock compression [1–5], as revealed in suc...

    Y. Syono, M. Kikuchi in Shock Waves in Materials Science (1993)

  8. No Access

    Chapter and Conference Paper

    NMR Spectra and Relaxation of 205Tl in the Tl2Ba2CuO6-δ (2201) High-T c Superconductor

    The 205Tl NMR in Tl2Ba2CuO6-δ has been measured as a function of temperature and oxygen content. A difference in the line shape for the H//c and the H⊥c has been observed in the oxygen defect sup...

    T. Shinohara, T. Goto, T. Sato, T. Fukase… in The Physics and Chemistry of Oxide Superco… (1992)

  9. No Access

    Chapter and Conference Paper

    Pressure Effect on the Superconducting Transition Temperature of T1-Based High-Tc Superconductor (2212)

    The superconducting transition temperature Tc of Tl-based high-Tc superconductor(2212) under pressure was determined by measuring the electric resistance. It was found that there is a linear relationship between ...

    H. Yoshida, T. Kaneko, S. Abe, S. Miura, S. Nakajima… in Advances in Superconductivity III (1991)

  10. No Access

    Chapter and Conference Paper

    Crystal Structure and Superconductivity of New Pb Families with (Pb,Cu) Double Layer — Pb(Ba,Sr)2(Y,Ca)Cu3Oy and Pb(Ba,Sr)2(Eu,Ce)2Cu3Oy

    Crystal structure, superconductivity and phase transition of Pb(Ba,Sr)2(Y,Ca)- Cu3Oy(Pb2212,y=7.0−8.4) and Pb(Ba,Sr)2(Eu,Ce)2Cu3Oy(Pb2222,y=9.0−10.4) were investigated. Single phases of Pb2212 and Pb2222 Mere obt...

    A. Tokiwa, Y. Syono, T. Oku, M. Nagoshi, N. Kobayashi… in Advances in Superconductivity III (1991)

  11. No Access

    Chapter

    Generation of Ultrahigh Magnetic Fields by Small-Scale Single-Shot Experiments

    Difficulties in high-field generation in small volumes are discussed. Small-scale experiments can hardly produce the highest fields even if the useful volume is restricted to be extremely small. Some experimen...

    Y. Nakagawa, S. Miura, T. Goto, Y. Syono in Megagauss Physics and Technology (1980)