Temperature dependence of critical current density and flux creep of Hg(Re)-1223 powdered specimens

2004 ◽  
Vol 412-414 ◽  
pp. 435-439 ◽  
Author(s):  
Y. Matsumoto ◽  
K. Higuchi ◽  
A. Nishida ◽  
T. Akune ◽  
N. Sakamoto
Keyword(s):  
Critical Current Density ◽  
Temperature Dependence ◽  
Critical Current ◽  
Current Density ◽  
Flux Creep

Temperature dependence of the intragrain critical current density in polycrystalline Ag-sheathed Bi(2223) tapes

1999 ◽  
Vol 9 (2) ◽  
pp. 2659-2662 ◽  
Author(s):  
G. Grasso ◽  
M.R. Cimberle ◽  
C. Ferdeghini ◽  
A.S. Siri ◽  
F. Marti ◽  
...  
Keyword(s):  
Critical Current Density ◽  
Temperature Dependence ◽  
Critical Current ◽  
Current Density

TEMPERATURE DEPENDENCE OF THE CRITICAL CURRENT DENSITY OF SUPERCONDUCTORS IN TWO-BAND GINZBURG–LANDAU THEORY: APPLICATION TO MgB2

2004 ◽  
Vol 18 (13) ◽  
pp. 1931-1936 ◽  
Author(s):  
I. N. ASKERZADE
Keyword(s):  
Critical Current Density ◽  
Temperature Dependence ◽  
Critical Current ◽  
Current Density ◽  
Magnesium Diboride ◽  
Landau Theory ◽  
Ginzburg Landau ◽  
Theory Application ◽  
Gl Theory ◽  
Good Agreement

Temperature dependence of the critical current density j c (T) for the superconducting magnesium diboride MgB 2 is studied in the vicinity of T c by using a two-band Ginzburg–Landau (G–L) theory. The result is in good agreement with experimental data for a bulk MgB 2. Comparision of obtained results with single-band GL theory are presented.

Pressure and temperature dependence of the critical current density inYBa2Cu3O7−δthin films

1993 ◽  
Vol 47 (5) ◽  
pp. 2835-2839 ◽  
Author(s):  
S. L. Bud’ko ◽  
M. F. Davis ◽  
J. C. Wolfe ◽  
C. W. Chu ◽  
P. H. Hor
Keyword(s):  
Critical Current Density ◽  
Temperature Dependence ◽  
Critical Current ◽  
Current Density

scholarly journals Temperature Dependence of the Zero-Field In-Plane Critical Current Density of YBa2Cu3O7-d High-Tc Superconductors

2012 ◽  
Vol 4 (2) ◽  
pp. 287 ◽  
Author(s):  
M. R. H. Sarkar ◽  
S. H. Naqib
Keyword(s):  
Critical Current Density ◽  
Temperature Dependence ◽  
Critical Current ◽  
Current Density ◽  
Flux Pinning ◽  
Hole Concentration ◽  
Oxygen Deficiency ◽  
Magnetic Hysteresis ◽  
Zero Field ◽  
Different Temperatures

The nature of the temperature dependence of the zero-field critical current density, Jc0(T), in the CuO2 planes has been investigated for c-axis oriented YBa2Cu3O7-d (Y123) thin films over a range of hole content, p. The hole concentration was varied by changing the oxygen deficiency, d, in the CuO1-d chains by annealing the films under different oxygen partial pressures and temperatures. The Jc0(T) values were extracted from the magnetic hysteresis (M-H) loops obtained at different temperatures. From the analysis of the Jc0(T) data for different sample compositions, we have extracted valuable information regarding the nature of the underlying magnetic flux pinning mechanisms in Y123 superconductors. We have found that the oxygen defects play only a secondary role in pinning of the vortices, the superfluid density, on the other hand plays a significant role. The exponent, n, governing the Jc0(T) behavior for a given sample composition showed a systematic behavior as hole contents are changed. Keywords: Y123 superconductors; Critical current density; Flux pinning.© 2012 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved.doi: http://dx.doi.org/10.3329/jsr.v4i2.9653 J. Sci. Res. 4 (2), 287-296 (2012)

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