Determination of the flux creep time from the microwave absorption in the high-temperature superconductor YBa2Cu3O7−δ

1992 ◽  
Vol 81 (7) ◽  
pp. 613-616 ◽  
Author(s):  
Keshav N. Shrivastava ◽  
Micky Puri ◽  
John Bear ◽  
Larry Kevan
Keyword(s):  
High Temperature ◽  
Microwave Absorption ◽  
High Temperature Superconductor ◽  
Flux Creep ◽  
Creep Time

Structure determination of the new high-temperature superconductor Y2Ba4Cu7O14+x

Nature ◽  
1988 ◽  
Vol 334 (6183) ◽  
pp. 596-598 ◽  
Author(s):  
P. Bordet ◽  
C. Chaillout ◽  
J. Chenavas ◽  
J. L. Hodeau ◽  
M. Marezio ◽  
...  
Keyword(s):  
High Temperature ◽  
Structure Determination ◽  
High Temperature Superconductor

Flux Creep in Single Crystals of the High-Temperature Superconductor Y 1 Ba 2 Cu 3 O 7- x

1989 ◽  
Vol 8 (4) ◽  
pp. 369-373 ◽  
Author(s):  
D Hoffmeister ◽  
O Dobbert ◽  
K.-P Dinse ◽  
W Goldacker ◽  
T Wolf
Keyword(s):  
High Temperature ◽  
Single Crystals ◽  
High Temperature Superconductor ◽  
Flux Creep

A New Method to Obtain U(J) Relationship in High Temperature Superconductor

1997 ◽  
Vol 11 (06) ◽  
pp. 753-765 ◽  
Author(s):  
M. J. Qin ◽  
X. Jin ◽  
X. X. Yao ◽  
Y. X. Fu ◽  
X. S. Rong ◽  
...  
Keyword(s):  
High Temperature ◽  
Magnetic Relaxation ◽  
High Temperature Superconductor ◽  
High Temperature Superconductors ◽  
Usual Method ◽  
New Method ◽  
Relaxation Data ◽  
J Curve ◽  
Different Temperatures

An implicit expression for the time dependence of the current density J(t) is derived without the constant assumption of dU/dJ or <dU/dJ>, based on which a new method to extract U(J) relationship from magnetic relaxation data in high temperature superconductors is described. This method is applied to a melt textured growth YBa2Cu3O6+x sample and we obtain U(J)~ J-μ with μ=0.90 for H‖c, which is in accordance with that derived by the usual method suggested by Malery et al.(μ=0.87). Moreover, both methods give the same value of the constant C, which implies that the determination of C by the requirement of continuity of the U(J) curve at different temperatures is reliable. And the results U(J)~ J-μ by both methods are evidence for the collective pinning or the vortex glass theory.

Flux creep in the Tl-1223 high temperature superconductor

1996 ◽  
Vol 101 (2) ◽  
pp. 181-185 ◽  
Author(s):  
W. Mexner ◽  
J. Hoffmann ◽  
S. Heede ◽  
K. Heinemann ◽  
H.C. Freyhardt ◽  
...  
Keyword(s):  
High Temperature ◽  
High Temperature Superconductor ◽  
Flux Creep
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