scholarly journals Field Enhanced Intrinsic Fluctuations in Highly Oriented High Tc Thin Films

1989 ◽  
Vol 42 (4) ◽  
pp. 431 ◽  
Author(s):  
CB Smith ◽  
JM BelI ◽  
N Savvides ◽  
S Filipczuk ◽  
C Andrikidis
Keyword(s):  
Thin Films ◽  
Magnetic Fields ◽  
Detailed Analysis ◽  
Field Dependence ◽  
Flux Pinning ◽  
High Tc ◽  
Superconducting Material ◽  
Intrinsic Fluctuations ◽  
Temperature Ranges ◽  
The Ideal

Experimental resistance versus temperature plots measured in various magnetic fields up to 7 T in strength are presented for highly oriented YBaCu oxide thin films deposited onto crystalline zirconia. Possible broadening mechanisms are summarised and a detailed analysis made for three models which involve processes intrinsic to the ideal superconducting material. It is shown that two distinct potentials may be needed to understand flux pinning in different temperature ranges below Te. These two potentials have quite different temperature and field dependence.

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.

scholarly journals Magnetic field dependence of Josephson photoresponse in high-Tc superconductor thin films

1994 ◽  
Vol 89 (8) ◽  
pp. 705-708 ◽  
Author(s):  
Gi. Schneider ◽  
P.G. Huggard ◽  
T.P. O'Brien ◽  
W. Blau ◽  
W. Prettl
Keyword(s):  
Magnetic Field ◽  
Thin Films ◽  
Field Dependence ◽  
Magnetic Field Dependence ◽  
High Tc ◽  
High Tc Superconductor ◽  
Superconductor Thin Films

Flux Pinning Properties in Low Magnetic Fields of YBa2Cu3Oy Thin Films Doped with a Small Amount of BaHfO3

2013 ◽  
Vol 48 (6) ◽  
pp. 304-308 ◽  
Author(s):  
Hayato KUBO ◽  
Yusuke ICHINO ◽  
Yutaka YOSHIDA ◽  
Masateru YOSHIZUMI ◽  
Teruo IZUMI ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetic Fields ◽  
Flux Pinning ◽  
Pinning Properties

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.

Angular dependence of transport critical currents in magnetic fields and flux pinning properties in Nd2−χCeχCuO4 thin films

1994 ◽  
Vol 194-196 ◽  
pp. 1877-1878 ◽  
Author(s):  
Terukazu Nishizaki ◽  
Yuuji Yamasaki ◽  
Ryoji Tanaka ◽  
Fusao Ichikawa ◽  
Takeshi Fukami ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetic Fields ◽  
Angular Dependence ◽  
Flux Pinning ◽  
Critical Currents ◽  
Pinning Properties

Field Dependence of Meissner Effect in a Single Crystal of YBa2Cu3Ox in the Ultra-Low Magnetic Field Regime

1987 ◽  
Vol 99 ◽  
Author(s):  
L. Krusin-Elbaum ◽  
A. P. Malozemoff ◽  
Y. Yeshurun
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Single Crystal ◽  
Field Dependence ◽  
Flux Pinning ◽  
Strong Field ◽  
Meissner Effect ◽  
Glassy Behavior ◽  
Low Magnetic Field ◽  
Flux Expulsion

ABSTRACTWe report a strong field-dependence (from 0.1% to 71%) of flux expulsion (Meissner effect) in a single crystal of YBa2Cu3Ox in magnetic fields from 36 kOe down to 50 mOe. The data is discussed in the context of flux pinning forces and glassy behavior.

STUDY OF THE PREPARATION OF HIGH Tc SUPERCONDUCTING YBCO THIN FILMS BY A PLASMA-ASSISTED MOCVD PROCESS

1989 ◽  
Vol 50 (C5) ◽  
pp. C5-149-C5-153
Author(s):  
DING-KUN PENG ◽  
GUANG-YAO MENG ◽  
CHUN-BAO CAO ◽  
CHUN-LIN WANG ◽  
QI FANG ◽  
...  
Keyword(s):  
Thin Films ◽  
High Tc ◽  
Ybco Thin Films

Anisotropic Vortex Dynamics Related to Screening Currents and Microwave Currents under Magnetic Fields on High Tc Superconductors

PIERS Online ◽  
2005 ◽  
Vol 1 (1) ◽  
pp. 110-114
Author(s):  
Tamio Endo ◽  
Hong Zhu ◽  
Takahisa Sakurada ◽  
Ajay K. Sarkar ◽  
Masanori Okada ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Vortex Dynamics ◽  
High Tc Superconductors ◽  
High Tc
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