Microstructures and Enhancement of Critical Current Density in<tex>$rm YBa_2rm Cu_3rm O_7$</tex>Thin Films Grown by Pulsed Laser Deposition on Various Single Crystal Substrates Modified by Ag Nano-Dots

2005 ◽  
Vol 15 (2) ◽  
pp. 3046-3049 ◽  
Author(s):  
A.H. Li ◽  
M. Ionescu ◽  
H.K. Liu ◽  
T. Silver ◽  
X.L. Wang ◽  
...  
Keyword(s):  
Thin Films ◽  
Critical Current Density ◽  
Single Crystal ◽  
Pulsed Laser Deposition ◽  
Critical Current ◽  
Current Density ◽  
Pulsed Laser ◽  
Laser Deposition

Nanostructured epitaxial thin films of Fe-based superconductors with enhanced superconducting properties

2012 ◽  
Vol 1434 ◽  
Author(s):  
P. Mele ◽  
K. Matsumoto ◽  
H. Nagayoshi ◽  
K. Fujita ◽  
Y. Yoshida ◽  
...  
Keyword(s):  
Thin Films ◽  
Critical Current Density ◽  
Single Crystal ◽  
Critical Current ◽  
Current Density ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Superconducting Film ◽  
Epitaxial Thin Films ◽  
Superconducting Properties

ABSTRACTEpitaxial Fe-Te-Se thin films were deposited by pulsed laser deposition at 250 ~ 600 °C on SrTiO3 (100, STO), MgO (100), LaAlO3 (100, LAO) and CaF2 (100) single crystal substrates. Best superconducting film was grown on CaF2: Tconset = 20.0 K and Tc0 = 16.18 K with Tdep = 300 °C, 45000 pulses, 3 Hz. The critical current density Jc at 4.2 K was 0.41×106A/cm2 at 0 T and 0.23×106 A/cm2 at 9 T. Angular dependence of Jc showed broad c-axis correlated peak when B ≥ 3 T.

Characterization of superconducting SmBa2Cu3O7 films grown by pulsed laser deposition

2002 ◽  
Vol 17 (10) ◽  
pp. 2599-2603 ◽  
Author(s):  
Q. X. Jia ◽  
S. R. Foltyn ◽  
J. Y. Coulter ◽  
J. F. Smith ◽  
M. P. Maley
Keyword(s):  
Transition Temperature ◽  
Critical Current Density ◽  
Pulsed Laser Deposition ◽  
Critical Current ◽  
Current Density ◽  
Deposition Temperature ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Superconducting Transition ◽  
Transition Width

We have investigated epitaxial superconducting SmBa2Cu3O7 (Sm123) films grown by pulsed-laser deposition on single-crystal SrTiO3 substrates. The deposition temperature plays an important role in determining the superconducting properties of Sm123 films. The superconducting transition temperature increases with the deposition temperature whereas the transition width decreases at deposition temperatures in the range of 700–875 °C. A Sm123 film deposited at 850 °C exhibits a transition temperature above 93 K with a transition width less than 0.5 K. Even though Sm123 films exhibit a higher transition temperature than Yba2Cu3O7 (Y123), the Sm123 shows lower critical current density at liquid-nitrogen temperature. The nominal critical current density of Sm123 film is less than 1 MA/cm2 at 75.4 K. Nevertheless, the Sm123 films have less anisotropy and stronger pinning characteristics compared to Y123. They are also much smoother with fewer particulates, as revealed by scanning electron microscopy.

Correlation between Film Thickness and Critical Current Density of Sm1+xBa2-xCu3O6+δ Films Deposited by Pulsed Laser Deposition

2002 ◽  
Vol 41 (Part 2, No. 9A/B) ◽  
pp. L983-L985 ◽  
Author(s):  
Kimihiko Sudoh ◽  
Yusuke Ichino ◽  
Masakazu Itoh ◽  
Yutaka Yoshida ◽  
Yoshiaki Takai ◽  
...  
Keyword(s):  
Critical Current Density ◽  
Film Thickness ◽  
Pulsed Laser Deposition ◽  
Critical Current ◽  
Current Density ◽  
Pulsed Laser ◽  
Laser Deposition
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