The Variation of Pinning Efficiency in YBCO Films Containing Columnar Defects

2021 ◽  
pp. 1354000
Author(s):  
Li Liu ◽  
Jie Liu ◽  
PengFei Zhai ◽  
ShengXia Zhang ◽  
Jian Zeng ◽  
...  
Keyword(s):  
Ybco Films ◽  
Columnar Defects

Angular Dependence of Critical Current Density in YBCO Films With Columnar Defects Crossing at Widespread Angles

2013 ◽  
Vol 23 (3) ◽  
pp. 8002404-8002404 ◽  
Author(s):  
Tetsuro Sueyoshi ◽  
Yuuichi Furuki ◽  
Eiki Tanaka ◽  
Takanori Fujiyoshi ◽  
Fumiaki Mitsugi ◽  
...  
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Angular Dependence ◽  
Current Density ◽  
Ybco Films ◽  
Columnar Defects

Angular behavior of flux dynamics in YBCO films with crossed columnar defects around the ab-plane

2018 ◽  
Vol 31 (12) ◽  
pp. 125002 ◽  
Author(s):  
Tetsuro Sueyoshi ◽  
Yuichi Furuki ◽  
Takanori Fujiyoshi ◽  
Fumiaki Mitsugi ◽  
Tomoaki Ikegami ◽  
...  
Keyword(s):  
Flux Dynamics ◽  
Ybco Films ◽  
Columnar Defects

High Performance YBCO Films

1992 ◽  
Author(s):  
Edgar J. Denlinger
Keyword(s):  
High Performance ◽  
Ybco Films

Summation of Flux Pinning by Columnar Defects Tilted at Different Angles in YBCO Thin Films

2021 ◽  
Vol 31 (5) ◽  
pp. 1-5
Author(s):  
Tetsuro Sueyoshi ◽  
Ryusei Enokihata ◽  
Hiroshi Yamaguchi ◽  
Takanori Fujiyoshi ◽  
Yasuki Okuno ◽  
...  
Keyword(s):  
Thin Films ◽  
Flux Pinning ◽  
Ybco Thin Films ◽  
Columnar Defects

Chemical Solution Deposition of Lanthanum Zirconate Buffer Layers on Biaxially Textured Ni–1.7% Fe–3% W Alloy Substrates for Coated-conductor Fabrication

2002 ◽  
Vol 17 (6) ◽  
pp. 1543-1549 ◽  
Author(s):  
S. Sathyamurthy ◽  
M. Paranthaman ◽  
T. Aytug ◽  
B. W. Kang ◽  
P. M. Martin ◽  
...  
Keyword(s):  
Sol Gel ◽  
Rf Sputtering ◽  
Cube Texture ◽  
Dip Coating ◽  
Buffer Layers ◽  
Lanthanum Zirconate ◽  
Solution Deposition ◽  
Ybco Films ◽  
Current Densities ◽  
Gel Processing

Sol-gel processing of La2Zr2O7 (LZO) buffer layers on biaxially textured Ni–1.7% Fe–3% 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 effects of increasing the annealing speed on the texture, microstructure, and carbon content retained in the film were studied. On top of the LZO films, epitaxial layers of yttria-stabilized zirconia and Ceria (CeO2) were deposited using rf sputtering, and YBa2Cu3Ox (YBCO) films were then deposited using pulsed laser deposition. Critical current densities (Jc) of 1.9 MA/cm2 at 77 K and self-field and 0.34 MA/cm2at 77 K and 0.5 T have been obtained on these films. These values are comparable to those obtained on YBCO films deposited on all-vacuum deposited buffer layers and the highest ever obtained using solution seed layers.

ANISOTROPIC VORTEX DYNAMICS AND PHASE DIAGRAM OF YBa2Cu3O7 SINGLE CRYSTALS WITH CANTED COLUMNAR DEFECTS

1996 ◽  
Vol 10 (22) ◽  
pp. 2723-2743 ◽  
Author(s):  
D. S. REED ◽  
N.-C. YEH ◽  
W. JIANG ◽  
U. KRIPLANI ◽  
M. KONCZYKOWSKI ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Magnetic Fields ◽  
Vortex Dynamics ◽  
Flow Model ◽  
Flux Flow ◽  
Thermally Activated ◽  
Liquid Transition ◽  
Columnar Defects ◽  
Thermally Activated Flux Flow ◽  
Activated Flux

The anisotropic vortex dynamics and phase diagram are determined for a YBa 2 Cu 3 O 7 single crystal with columnar defects oriented at ±7.5° relative to the crystalline c-axis. A second-order splayed-glass to vortex-liquid transition is manifested for magnetic fields nearly parallel to the columns via the critical scaling of vortex AC and DC transport properties. In contrast, for magnetic fields aligned close to the ab-plane, an XY-like vortex-glass transition prevails. For magnetic fields at intermediate angles, there is no evidence of any vortex phase transition, and the vortex dynamics is described in terms of the thermally activated flux flow model.

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