On the low-field Meissner fraction in high-Tc ceramics

1991 ◽  
Vol 169 (1-4) ◽  
pp. 655-656 ◽  
Author(s):  
M. Wetzstein ◽  
R. Behr ◽  
J. Kötzler ◽  
A. Spirgatis ◽  
M. Hartl
Keyword(s):  
High Tc ◽  
Low Field ◽  
Meissner Fraction

MICROWAVE ABSORPTION STUDIES ON HIGH-Tc SUPERCONDUCTORS AND RELATED MATERIALS I—LOW-FIELD MICROWAVE ABSORPTION IN A BiSrCaCuO THIN FILM DEPOSITED BY MOCVD

1991 ◽  
Vol 05 (09) ◽  
pp. 667-674 ◽  
Author(s):  
K. SUGAWARA ◽  
T. SUGIMOTO ◽  
K. YASUIKE ◽  
D.J. BAAR ◽  
Y. SHIOHARA ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Thin Film ◽  
Microwave Absorption ◽  
Applied Field ◽  
Film Plane ◽  
Experimental Results ◽  
High Tc Superconductors ◽  
High Tc ◽  
Low Field ◽  
Absorption Studies

Non-resonant microwave absorption as a function of temperature and magnetic field has been studied in a Bi-Sr-Ca-Cu-O film prepared by MOCVD. A maximum in the absorption as a function of temperature was observed at approximately 60 K. An average Josephson loop diameter of about 0.9~1.5 microns was inferred from the experimental results. The absorption was found to depend on the angle of the film plane relative to the applied field.

Temperature dependence of the low field microwave absorption of high Tc superconductors

1988 ◽  
Vol 133 (6) ◽  
pp. 339-341 ◽  
Author(s):  
A.R. Harutyunyan ◽  
L.S. Grigoryan ◽  
M. Baran ◽  
S. Piechota
Keyword(s):  
Temperature Dependence ◽  
Microwave Absorption ◽  
High Tc Superconductors ◽  
High Tc ◽  
Low Field

Two-zone annealing of Tl0.5Pb0.5(Sr0.8Ba0.2)2Ca2Cu3Oy

1994 ◽  
Vol 9 (10) ◽  
pp. 2470-2473 ◽  
Author(s):  
T.L. Aselage ◽  
E.L. Venturini ◽  
J.A. Voigt ◽  
D.L. Lamppa ◽  
S.B. Van Deusen
Keyword(s):  
Single Phase ◽  
Sample Temperature ◽  
Low Field ◽  
Stable Conditions ◽  
Meissner Fraction

Stable conditions have been identified for two-zone processing of the superconducting thallium cuprate Tl0.5Pb0.5(Sr0.8Ba0.2)2Ca2Cu3Oy. With P(O2) of 0.8 atm, P(Tl2O) of 4.4 × 10−3 atm, and a sample temperature of 920 °C, single-phase Tl0.5Pb0.5(Sr0.8Ba0.2)2Ca2Cu3Oy, is produced with a Tc of 115 K, complete diamagnetic shielding, and Meissner fraction greater than 70%. Although a small amount of melting occurs under these conditions, a comparison of the low-field diamagnetic shielding for these samples with samples of Pb- and Sr-free TlBa2Ca2Cu3Oy and Tl2Ba2Ca2Cu3Oy, suggests that such melting is not necessary to produce the triple-CuO2-layer superconductors.

Low-field electrodynamics of high-Tc superconductors — theory and experiment

1991 ◽  
Vol 174 (1-3) ◽  
pp. 109-116 ◽  
Author(s):  
S.L. Ginzburg ◽  
V.P. Khavronin ◽  
G.Yu. Logvinova ◽  
I.D. Luzyanin ◽  
J. Herrmann ◽  
...  
Keyword(s):  
High Tc Superconductors ◽  
High Tc ◽  
Low Field ◽  
Theory And Experiment

Formation of the low-field peak in magnetization loops of high-Tc superconductors

1999 ◽  
Vol 320 (1-2) ◽  
pp. 101-114 ◽  
Author(s):  
M.R Koblischka ◽  
L Půst ◽  
M Jirsa ◽  
T.H Johansen
Keyword(s):  
High Tc Superconductors ◽  
High Tc ◽  
Low Field ◽  
Field Peak

Mechanical measurement for phase transition of vortex at low field in high-Tc cuprates

1997 ◽  
Vol 282-287 ◽  
pp. 2391-2392
Author(s):  
W. Tian ◽  
J.-S. Zhu ◽  
H.-M. Shao ◽  
Q.-M. Zhang ◽  
Y.-N. Wang
Keyword(s):  
Phase Transition ◽  
Mechanical Measurement ◽  
High Tc ◽  
Low Field ◽  
High Tc Cuprates
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