Structural Defects in Thin Films Of High TC Superconductors

1989 ◽  
Vol 169 ◽  
Author(s):  
R. Ramesh ◽  
D.M. Hwang ◽  
P. England ◽  
T.S. Ravi ◽  
C.Y. Chen ◽  
...  
Keyword(s):  
Thin Films ◽  
Layered Structure ◽  
Flux Pinning ◽  
Structural Defects ◽  
Short Report ◽  
High Tc Superconductors ◽  
High Tc

AbstractIn this short report, we describe some of the structural defects present in laser deposited Y‐Ba‐Cu‐O thin films. Many of the defects observed are polytypoidic variants, related to the layered structure of these cuprates. One possible model by which flux pinning can be achieved is presented.

Thin Films and Superlattices of High-Tc Superconductors

1992 ◽  
pp. 353-366
Author(s):  
Ø. Fischer ◽  
J. M. Triscone ◽  
L. Antognazza ◽  
O. Brunner ◽  
L. Miéville ◽  
...  
Keyword(s):  
Thin Films ◽  
High Tc Superconductors ◽  
High Tc

MAGNETO-OPTIC IMAGING OF PROTON-IRRADIATED HIGH Tc SUPERCONDUCTING THIN FILMS: A REVISIT OF Jc(T) FUNCTIONAL AND FLUX PINNING ENHANCEMENT

2001 ◽  
Vol 15 (24n25) ◽  
pp. 3357-3358
Author(s):  
Chong Wang ◽  
Hye-Won Seo ◽  
Chun-Jung Su ◽  
Yuh-Huah Wang ◽  
Q. Y. Chen ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetic Fields ◽  
External Field ◽  
Critical Current Density ◽  
Current Density ◽  
Flux Pinning ◽  
Ybco Film ◽  
Superconducting Thin Films ◽  
High Tc ◽  
Quantitative Measurements

We have performed systematic quantitative measurements of the critical current density Jc(B, T) for YBCO thin films proton-irradiated to various dosages using the MOI technique. Results for external magnetic fields up to 400Oe and temperature ranging from 5 to 80K are presented for a 600nm thick YBCO film irradiated by proton up to a dosage of 1016 cm -2 at 500 keV. While no significant differences were observed for T>50K, the Jc values consistently increased with the increasing external field for T<50K.

MAGNETIC PROPERTIES OF THE HIGH Tc SUPERCONDUCTORS BiSrCaCuO AND TlBaCaCuO

1989 ◽  
Vol 03 (01) ◽  
pp. 77-85 ◽  
Author(s):  
Y. D. DAI ◽  
C. LIN ◽  
W. B. ZHANG ◽  
S. Q. FENG ◽  
X. ZHU ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Flux Pinning ◽  
Magnetic Hysteresis ◽  
Hysteresis Loops ◽  
High Tc Superconductors ◽  
Magnetic Current ◽  
High Tc ◽  
Bean Model ◽  
Current Densities ◽  
Magnetic Hysteresis Loops

Magnetic properties of the high T c superconductors BiSrCaCuO and TlBaCaCuO were investigated systematically. Magnetic current densities were calculated from magnetic hysteresis loops of bulk and powdered samples by Bean model. The results showed that flux pinning in these materials is much weaker than that in YBaCuO.

Epitaxial manganate thin films by sputtering for spin injection into high Tc superconductors

2006 ◽  
Vol 445-448 ◽  
pp. 865-868
Author(s):  
M. Lmouchter ◽  
H. Endo ◽  
Y. Nakamura ◽  
M. Iwayama ◽  
Y. Tanaka ◽  
...  
Keyword(s):  
Thin Films ◽  
Spin Injection ◽  
High Tc Superconductors ◽  
High Tc

Far-Infrared Radiation Modulators Using High-Tc Superconductors

1998 ◽  
Vol 120 (1) ◽  
pp. 24-29 ◽  
Author(s):  
Z. M. Zhang
Keyword(s):  
Thin Films ◽  
Experimental Study ◽  
Normal State ◽  
Infrared Radiation ◽  
Optical Constants ◽  
Far Infrared ◽  
High Tc Superconductors ◽  
High Tc ◽  
Future Experimental Study ◽  
Far Infrared Radiation

The potential of using high-Tc superconductors as intensity modulators for far-infrared radiation is investigated in this work. Reflectance and transmittance for several design structures are computed using the published optical constants of the superconductor YBa2Cu3O7 and substrate materials. Notable differences in the reflectance and transmittance between the superconducting state and the normal state are illustrated. The best results are obtained based on the reflectance of thin films (10 nm–50 nm thick) on thin substrates (less than 100 μm thick) and for radiation incident on the substrate. This study demonstrates that high-Tc superconductive thin films can be used to build far-infrared radiation modulators. Future experimental study is recommended in order to materialize this promising thermo-optical device.

The materials equation and scaling law of flux pinning in high Tc superconductors

1997 ◽  
Vol 5 (1-6) ◽  
pp. 147-150 ◽  
Author(s):  
Daole Yin ◽  
Chuanyi Li ◽  
Weiping Bai
Keyword(s):  
Flux Pinning ◽  
Scaling Law ◽  
High Tc Superconductors ◽  
High Tc

Laser deposition of thin films of high Tc superconductors

1993 ◽  
Vol 69 (1-4) ◽  
pp. 365-369 ◽  
Author(s):  
A. Giardini Guidoni ◽  
I. Pettiti ◽  
A. Morone ◽  
V. Marotta ◽  
M. Snels ◽  
...  
Keyword(s):  
Thin Films ◽  
Laser Deposition ◽  
High Tc Superconductors ◽  
High Tc

Radiation effects in thin films of high Tc superconductors

1988 ◽  
Vol 32 (1-4) ◽  
pp. 405-411 ◽  
Author(s):  
G.J. Clark ◽  
A.D. Marwick ◽  
F. Legoues ◽  
R.B. Laibowitz ◽  
R. Koch ◽  
...  
Keyword(s):  
Thin Films ◽  
Radiation Effects ◽  
High Tc Superconductors ◽  
High Tc
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