Titlebook: High-Tc Superconductors; Harald W. Weber Book 1988 Springer Science+Business Media New York 1988 HTS.High-temperature superconductivity.Su

adroit

細(xì)頸瓶

Defect Chemistry of Oxide Superconductorshe 40 K-class of superconductors with K.NiF. structure., the 90 K-class of oxygen-deficient perovskites. was discovered, and very recently, superconductors of the Bi-Sr-Ca-Cu-O system, with an onset critical temperature of 120 K, have been reported. High-T. superconducting oxides are complicated oxi

松馳

Deviation from Linearity of the Cu-O Chains in Orthorhombic YBa2Cu3O7 by High-Resolution Neutron Pow The oxygen atoms on the so-called linear Cu-O chains occupy potential minima which are displaced from the chain axis along [100] by at least 0.08(1). at all temperatures. The Cu-O-Cu bond angle of the resulting Cu-O zig-zag chains, .=175(1)°, does not vary significantly as a function of temperature

陰謀

偽證

Physical Properties and Structural Chemistry of YBa2Cu3Ox Prepared by a Defined Oxygen Sorption Procd and reproducible oxygen contents in order to study physical and structural properties correlated to the oxygen stoichiometry. Cell constants, phase transformations and superconducting transition temperatures are given as a function of oxygen content and/or temperature. Thermal desorption spectra o

Minuet

Correlation of Tc with the Rare Earth Size in (Ln)Ba2Cu3O6+x Superconductors (Ln = La, Nd, Sm, Eu, Yley’s defects for the non-quantified n values [1]. In this series, YBa.Cu.O. (with 0 ≤ x ≤ 1) exhibits remarkable superconductive properties and, in agreement with other reported results, a more precise domain has been found with T. above 90 K for 0.66 ≤ x ≤ 1. This orthorhombic phase is associated

Annotate

Electrical Resistivity, Magnetic Susceptibility, and Infrared Spectra of Superconducting RBa2Cu3O7 w11er.. By partial substitution of Ba with Sr C.W.Chu et al. obtained a compound with a transition temperature T. of about. 55 K. In February 1987 M.K.Wu, C.W.Chu et al. found a sensationally high T. of about 93 K in the oxide system Y-Ba-Cu-O. The superconducting phase in this system was identified

Harridan

Heat Capacity Measurements on Some High-Tc SuperconductorsLa.Sr.CuO. compound places this material well into the strong coupling limit From the data for REBa.Cu.O., the degeneracies of the crystal field ground state are determined and the magnetic moment in the ground state and the energy separation to the first excited crystal field state are estimated. T

搏斗

Effect of Cu/Zn Substitution upon Superconductivity in YBa2(Cu1-xZnx)3O7-δ and La1.85Sr0.15Cu1-xZnxOls which indicate that experimental data of these materials are of grime interest. According to recent bandstructure calculations. the main contribution to the density of states at the Fermi energy comes from the antibonding combinations of the Cu-dx.-y. -orbitals with the px- and py-orbitals of the

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