Effect of the microscopic correlated-pinning landscape on the macroscopic critical current density in YBCO films

2000 ◽  
Vol 341-348 ◽  
pp. 1177-1178 ◽  
Author(s):  
G. Ghigo ◽  
A. Chiodoni ◽  
R. Gerbaldo ◽  
L. Gozzelino ◽  
F. Laviano ◽  
...  
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Ybco Films

An all-field-range description of the critical current density in superconducting YBCO films

2011 ◽  
Vol 24 (10) ◽  
pp. 105020 ◽  
Author(s):  
I A Golovchanskiy ◽  
A V Pan ◽  
O V Shcherbakova ◽  
S A Fedoseev ◽  
S X Dou
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Field Range ◽  
Ybco Films

Fabrication of High Jc YBa2Cu3O7-δ Coated Conductors Using Sol-Gel Buffer Layers On Nickel and Nickel Alloy Substrates

2001 ◽  
Vol 689 ◽  
Author(s):  
S. Sathyamurthy ◽  
M. Paranthaman ◽  
B. W. Kang ◽  
H. Y. Zhai ◽  
T. Aytug ◽  
...  
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Sol Gel ◽  
Rf Sputtering ◽  
Cube Texture ◽  
Dip Coating ◽  
Coated Conductors ◽  
Buffer Layers ◽  
Ybco Films

Sol-gel processing of La2Zr2O7 (LZO) buffer layers on biaxially textured Ni-3 at.% W alloy substrates using a continuous reel-to-reel dip-coating unit has been studied. The epitaxial LZO films obtained have a strong cube texture and uniform microstructure. The effect of increasing the annealing speed on the texture, microstructure and the carbon content retained in the film were studied. On top of the LZO films, epitaxial layers of Yttria Stabilized Zirconia (YSZ) and Ceria (CeO2) were deposited using rf sputtering, and YBa2Cu3Ox (YBCO) films were then deposited using Pulsed Laser Deposition (PLD). A critical current density (Jc) of 1.9 MA/cm2 at 77K and self-field and 0.34 MA/cm2 at 77K and 0.5T have been obtained on these films. These values are comparable to those obtained on YBCO films deposited on all-vacuum deposited buffer layers, and are the highest ever obtained using solution seed layers. The use of all-solution buffers for coated conductor processing has also been explored. A critical current density of 1.1 MA/cm2 at 77 K and self-field was obtained on YBCO films grown be PLD on LZO buffered nickel substrates.

Comparative Study of Thickness Dependence of Critical Current Density of Yba2Cu3O7–δ on (100) SrTiO3 and on Rolling-assisted Biaxially Textured Substrates

2002 ◽  
Vol 17 (7) ◽  
pp. 1750-1757 ◽  
Author(s):  
B. W. Kang ◽  
A. Goyal ◽  
D. F. Lee ◽  
J. E. Mathis ◽  
E. D. Specht ◽  
...  
Keyword(s):  
Surface Morphology ◽  
Critical Current Density ◽  
Film Thickness ◽  
Comparative Study ◽  
Critical Current ◽  
Current Density ◽  
Pulsed Laser ◽  
Cube Texture ◽  
Laser Deposition ◽  
Ybco Films

We investigated the dependence of critical current density (Jc) on thickness of Yba2Cu3O7−δ (YBCO) films grown by pulsed laser deposition on (100) SrTiO3 (STO) and on rolling-assisted biaxially textured substrates (RABiTS). The thickness of YBCO films varied from 0.19 to 3 μm. The highest Jcs of 5.3 and 2.6 MA/cm2 at 77 K, self-field were obtained for 0.19-μm YBCO films on STO and RABiTS, respectively. Jc was found to decrease exponentially with YBCO thickness on both substrates. However, the results suggest different mechanisms are responsible for the Jc reduction in the two cases. On STO, growth of a-axis grains within c-axis films and broadening of the in-plane texture were observed in thick films. On RABiTS, degradation in cube texture as well as development of a porous surface morphology were found to correlate with film thickness.

Texture influence on critical current density of YBCO films deposited on (100)-MgO substrates

1994 ◽  
Vol 235-240 ◽  
pp. 627-628 ◽  
Author(s):  
M. Pernet ◽  
D. Chateigner ◽  
P. Germi ◽  
C Dubourdieu ◽  
O. Thomas ◽  
...  
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Ybco Films

Critical current density in highly biaxially-oriented YBCO films: Can we control J/sub c/(77 K) and optimize up to more than 10/sup 6/ amp/cm/sup 2/?

1999 ◽  
Vol 9 (2) ◽  
pp. 1535-1538 ◽  
Author(s):  
V.M. Pan ◽  
A.L. Kasatkin ◽  
V.L. Svetchnikov ◽  
V.A. Komashko ◽  
A.G. Popov ◽  
...  
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Ybco Films

Critical current density of thin YBCO films on buffered sapphire substrates

2000 ◽  
Vol 13 (2) ◽  
pp. 209-214 ◽  
Author(s):  
V A Komashko ◽  
A G Popov ◽  
V L Svetchnikov ◽  
A V Pronin ◽  
V S Melnikov ◽  
...  
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Ybco Films ◽  
Sapphire Substrates
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