Two hole SQUID behaviour in a bulk YBCO sample at 77K

1988 ◽  
Vol 153-155 ◽  
pp. 1411-1412 ◽  
Author(s):  
S. Harrop ◽  
C.M. Muirhead ◽  
M.S. Colclough ◽  
C.E. Gough
Keyword(s):  
Bulk Ybco ◽  
Ybco Sample

scholarly journals Cooper Pair-Like Systems at High Temperature and their Role on Fluctuations Near the Critical Temperature

1998 ◽  
Vol 12 (29n31) ◽  
pp. 3216-3219 ◽  
Author(s):  
M. Ausloos ◽  
S. Dorbolo
Keyword(s):  
Phase Transition ◽  
Electrical Resistivity ◽  
High Temperature ◽  
Critical Temperature ◽  
Oxygen Diffusion ◽  
Cooper Pair ◽  
Anomalous Behavior ◽  
Anomalous Effect ◽  
Linear Temperature ◽  
Ybco Sample

A logarithmic behavior is hidden in the linear temperature regime of the electrical resistivity R(T) of some YBCO sample below 2T c where "pairs" break apart, fluctuations occur and "a gap is opening". An anomalous effect also occurs near 200 K in the normal state Hall coefficient. In a simulation of oxygen diffusion in planar 123 YBCO, an anomalous behavior is found in the oxygen-vacancy motion near such a temperature. We claim that the behavior of the specific heat above and near the critical temperature should be reexamined in order to show the influence and implications of fluctuations and dimensionality on the nature of the phase transition and on the true onset temperature.

scholarly journals Flux Penetration Effects in High-Tc SQUIDs

1989 ◽  
Vol 42 (4) ◽  
pp. 401
Author(s):  
GJ SIoggett ◽  
lK Harvey ◽  
L Wieczorek ◽  
RE Binks ◽  
R Driver
Keyword(s):  
Magnetic Field ◽  
Copper Oxide ◽  
Direct Measurement ◽  
Barium Copper Oxide ◽  
Break Junction ◽  
Flux Penetration ◽  
High Tc ◽  
Bulk Ybco ◽  
Barium Copper ◽  
Yttrium Barium

Two experiments pertaining to the effects of intergranular flux penetration in high-Tc yttrium-barium-copper oxide (YBCO) SQUIDs are described. The first is a direct measurement of the flux noise of bulk YBCO exposed to the earth's magnetic field, and the second involves the fabrication and testing of break junction d.c. SQUIDs. Implications of a number of undesirable effects seen in these experiments are discussed.

Preparation and Properties of Large Bulk YBCO Superconductor Quench and Melt Growth (QMG) Process

1991 ◽  
pp. 715-719 ◽  
Author(s):  
Kiyoshi Sawano ◽  
Mitsuru Morita ◽  
Masamoto Tanaka ◽  
Keiichi Kimura ◽  
Seiki Takebayashi ◽  
...  
Keyword(s):  
Ybco Superconductor ◽  
Melt Growth ◽  
Bulk Ybco ◽  
Large Bulk

Crystal Growth of Bulk YBCO Superconducting Oxides; Effect of Undercooling

1993 ◽  
pp. 581-583 ◽  
Author(s):  
K. Ohtsu ◽  
Y. Yamada ◽  
T. Izumi ◽  
Y. Nakamura ◽  
Y. Shiohara
Keyword(s):  
Crystal Growth ◽  
Bulk Ybco ◽  
Superconducting Oxides

Measurements of Thermal Effects in a Bulk YBCO Single Domain Superconductor Submitted to a Variable Magnetic Field

2007 ◽  
Vol 17 (2) ◽  
pp. 3036-3039 ◽  
Author(s):  
P. Laurent ◽  
P. Vanderbemden ◽  
S. Meslin ◽  
J.G. Noudem ◽  
J.-P. Mathieu ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Thermal Effects ◽  
Variable Magnetic Field ◽  
Single Domain ◽  
Bulk Ybco

scholarly journals Bulk YBCO with discontinuous irradiation defects: Bose-glass behaviour and very high critical current densities

2008 ◽  
Vol 97 ◽  
pp. 012080 ◽  
Author(s):  
G Fuchs ◽  
K Nenkov ◽  
G Krabbes ◽  
L Shlyk ◽  
R Weinstein ◽  
...  
Keyword(s):  
Critical Current ◽  
Bulk Ybco ◽  
Bose Glass ◽  
Current Densities ◽  
Very High

scholarly journals EXPERIMENTAL INVESTIGATION OF TRAPPED FLUX STABILITY IN BULK YBCO

2008 ◽  
Author(s):  
J. E. Pienkos ◽  
B. Douine ◽  
J. Leveque ◽  
P. J. Masson ◽  
C. A. Luongo ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Bulk Ybco ◽  
Trapped Flux
Sign in / Sign up

Export Citation Format

Share Document