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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
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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...
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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...
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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...
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Chapter and Conference Paper
Phase changes in solids during shock loading and unloading
Polymorphic phase transformations have been found in many substances by shock compression. The transition pressures observed by dynamic and static compression are generally in good agreement, provided that the...
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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...
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Chapter and Conference Paper
Hugoniot-measurement study of the stabilized zirconia single crystal
Hugoniot-measurement experiments of the Y2O3-doped (9.6 mol%) stabilized zirconia in the pressure range up to 120 GPa were performed by using single crystals to study cubic directly the yielding property, phase t...
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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 ...
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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...