Enhancement of critical current density in direct‐current‐sputtered TlBa2Ca2Cu3O9±δ superconducting thin films

1995 ◽  
Vol 66 (7) ◽  
pp. 885-887 ◽  
Author(s):  
J. Y. Juang ◽  
J. H. Horng ◽  
S. P. Chen ◽  
C. M. Fu ◽  
K. H. Wu ◽  
...  
Keyword(s):  
Thin Films ◽  
Critical Current Density ◽  
Critical Current ◽  
Direct Current ◽  
Current Density ◽  
Superconducting Thin Films

Columnar tilt and vortex stress in superconducting thin films of NdBa2Cu3O7−δ: Magnetization critical current-density measurements

2004 ◽  
Vol 96 (12) ◽  
pp. 7403-7406 ◽  
Author(s):  
Sanghamitra Khatua ◽  
P. K. Mishra ◽  
Ravi Kumar ◽  
D. C. Kundaliya ◽  
D. Buddhikot ◽  
...  
Keyword(s):  
Thin Films ◽  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Superconducting Thin Films ◽  
Density Measurements

AC SUSCEPTIBILITY OF YBCO SUPERCONDUCTING THIN FILMS

2006 ◽  
Vol 20 (15) ◽  
pp. 923-929
Author(s):  
C. SBÂRCIOG ◽  
T. R. REDAC ◽  
I. GR. DEAC
Keyword(s):  
Thin Films ◽  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Ac Susceptibility ◽  
Superconducting Thin Films ◽  
Superconducting Transition ◽  
Susceptibility Data ◽  
Complex Susceptibility ◽  
Intergranular Critical Current Density

Ca -doped (x = 0.00, 0.07 and 0.20) epitaxial Y 1-x Ca x Ba 2 Cu 3 O 7-δ thin films were prepared on SrTiO 3 (100) by PLD technique. The superconducting transition temperature is found to decrease with increasing Ca content. The AC-susceptibility data were used to determine the intergranular critical current density, when varying the field amplitude H AC . The temperature dependence of critical current density was determined from the imaginary part of the complex susceptibility, χ′′(T), using Xing's relation. The results were analyzed in terms of superconductor-insulator-superconductor (SIS) and superconductor-normal-superconductor (SNS) type models.

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