Anomalous magnetic behavior of superconducting thin films in small magnetic fields [4] close to the transition temperature

1999 ◽  
Vol 7 (4) ◽  
pp. 533-540 ◽  
Author(s):  
H.A. Radovan ◽  
H.H. Wen ◽  
P. Ziemann
Keyword(s):  
Thin Films ◽  
Transition Temperature ◽  
Magnetic Fields ◽  
Magnetic Behavior ◽  
Superconducting Thin Films

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 behavior of both superconducting thin films and their deposition targets

1988 ◽  
Vol 63 (8) ◽  
pp. 4199-4201 ◽  
Author(s):  
K. Moorjani ◽  
J. Bohandy ◽  
F. J. Adrian ◽  
B. F. Kim ◽  
U. Atzmony ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetic Behavior ◽  
Superconducting Thin Films

Scaling behavior near transition temperature in Al-doped YBa2Cu3O7 superconducting thin films

2004 ◽  
Vol 468 (1-2) ◽  
pp. 93-99 ◽  
Author(s):  
A.M. Saleh ◽  
M.M. Abu-Samreh ◽  
M.H. Soliman ◽  
A.A. Leghrouz ◽  
R.M.-L. Ketaneh ◽  
...  
Keyword(s):  
Thin Films ◽  
Transition Temperature ◽  
Scaling Behavior ◽  
Superconducting Thin Films

MAGNETIC BEHAVIOR OF MAGNESIUM DIBORIDE SUPERCONDUCTING THIN FILMS

2003 ◽  
Vol 17 (04n06) ◽  
pp. 597-601
Author(s):  
G. GRIMALDI ◽  
U. GAMBARDELLA ◽  
S. PACE ◽  
V. FERRANDOM ◽  
C. FERDEGHINI ◽  
...  
Keyword(s):  
Thin Films ◽  
Hysteresis Loops ◽  
Annealing Treatment ◽  
Magnetic Behavior ◽  
Anomalous Behavior ◽  
Zero Field ◽  
Superconducting Thin Films ◽  
Double Peak ◽  
Transverse Geometry ◽  
Field Approaches

We report the experimental results of the field H and temperature T dependent magnetization M measurements of MgB 2 superconducting thin films deposited by pulsed laser deposition. MgB 2 thin films were obtained from a precursor layer deposited in UHV at room temperaure from stoichiometric target, then an annealing treatment in Mg atmosphere allowed to crystallize the superconducting phase. From the hysteresis loops at each temperature of measurement the critical current density Jc(H) has been extracted according to Brandt's model for a transverse geometry. At low temperatures an anomalous behavior has been observed in the hysteresis loops: as the exernal magnetic field approaches the zero field region on the upper and lower branches, a double peak of the magnetization occurs. This magnetic flux jumping can be explained within an adiabatic critical state model, and can be ascribed to thermomagnetic instabilities as in bulk samples.

Transition from type I to type II behaviour in superconducting thin films under perpendicular magnetic fields

1974 ◽  
Vol 49 (2) ◽  
pp. 143-144 ◽  
Author(s):  
Y. Pellan ◽  
J. Blot ◽  
J.C. Pineau ◽  
J. Rosenblatt
Keyword(s):  
Thin Films ◽  
Magnetic Fields ◽  
Type I ◽  
Superconducting Thin Films ◽  
Type Ii
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