Zobrazeno 1 - 10
of 254
pro vyhledávání: '"Y. Eckstein"'
Publikováno v:
Physica C: Superconductivity. 449:57-61
Using charge transport in sintered ceramic samples it is observed that at all doping, including non superconducting overdoped samples, there exists a temperature in which below it d R /d T 2 plane is never overdoped. Data relating experimental Cooper
Publikováno v:
Journal of Physics and Chemistry of Solids. 66:1137-1144
The well known phenomenon of the increase of Tc of YBCO after slow cooling or low temperature annealing without change of the oxygen content, was found also for the YBCO like tetragonal superconductors of (CaxLa1−x)(LauBa1−u)2Cu3Oy (this compound
Publikováno v:
Superconductor Science and Technology. 18:896-901
Work with ceramic samples of (CaxLa1−x)(LauBa1−u)2Cu3Oy (these compounds have previously been denoted as CLBLCO, CLBCO or CaLaBaCuO) has shown that ordinary cooling rates used after annealing at high oxygen pressures may result in samples having
Publikováno v:
Superconductor Science and Technology. 17:1389-1394
Different values of Tc were found for the 1:2:3 tetragonal superconductors (CaxLa1?x)(La0.25+xBa1.75?x)Cu3Oy (these compounds have previously been denoted as CLBLCO, CLBCO or CaLaBaCuO) prepared under various conditions but having the same x and y. T
Publikováno v:
Superconductor Science and Technology. 17:1077-1081
The effect of a substitute ion on the lattice constants and T c of the optimal oxygen doped (M x La 1 - x )(La u Ba 1 - u ) 2 Cu 3 O y has been studied. This series is variously called CLBLCO, CLBCO or CaLaBaCuO when M = Ca 2 + , or YLBLCO when M = Y
Autor:
George M. Reisner, A. N. Men, Galina Bazalitsky, Y Eckstein, Bertina Fisher, A. Knizhnik, Larisa Patlagan, Y Elisha, Y Direktovich, O Shafir
Publikováno v:
Superconductor Science and Technology. 17:448-458
The conditions (temperature, pressure and time) for attaining equilibrium with oxygen for different YBCO materials are reported. The equilibrium oxygen content was used in order to determine more exact values for the enthalpies and entropies of inter
Publikováno v:
Physica C: Superconductivity. 400:25-35
YBa2Cu3Oy ceramics having different morphologies: low porosity, composed of well shaped and closely connected large crystal grains, high porosity, composed of badly packed irregularly shaped small grains, and of intermediate microstructure,were inves
Publikováno v:
Journal of Physics and Chemistry of Solids. 64:947-952
Equilibrium of 1:2:3 superconductors (Ca x La 1− x )(Ba 1.75− x La 0.25+ x )Cu 3 O y (this compound has in the past variously denoted as CLBLCO, CLBCO or CaLaBaCuO) with oxygen was studied for x =0.1 and x =0.4 in the temperature range of 150–9
Autor:
A. Knizhnik, George M. Reisner, Gideon S. Grader, Y Eckstein, Gennady E. Shter, I. Direktovich
Publikováno v:
Journal of Physics and Chemistry of Solids. 64:273-280
Liquid nitrogen, liquid oxygen and liquid argon were tested as coolers for quenching performed after equilibrium of (Ca x La 1− x )(Ba 1.75− x La 0.25+ x )Cu 3 O y ( x =0.1 or 0.4) with oxygen has been attained. This compound has been previously
Autor:
A. Trokiner, Sébastien Marchand, Y. Eckstein, A. Knizhnik, Philippe Monod, Andrey Yakubovskii
Publikováno v:
Comptes Rendus de l'Académie des Sciences - Series IIC - Chemistry. 4:819-824
Nous mesurons la resonance magnetique nucleaire du 43 Ca en fonction de la temperature dans l'etat normal du supraconducteur a haute temperature (Ca x La 1-x )(Ba 1.75-x La 0,25+x )Cu 3 O y . Les echantillons sont choisis de maniere a comparer l'effe