The High Resolution Magneto-Optical Faradayeffect as a Research Tool to Investigate Details of Current and Magnetic Flux Distribution in Y-Ba-Cu-O Thin Films

1995 ◽  
Vol 401 ◽  
Author(s):  
A. Forkl ◽  
H. Kronmüller ◽  
H.-U. Habermeier ◽  
B. Leibold

AbstractThe magneto-optical Faradayeffect [MOFE] is known to be an excellent tool for the spatially resolved analysis of the flux distribution in superconductors. We use three examples to demonstrate the power of this technique for device oriented investigations. It is shown that homogeneous Yba2Cu3O7 thin films with different shape show a flux pattern strongly depending on the geometry of the sample; model calculations for the flux distribution are in excellent agreement with the experimental results. Furthermore, we show, that crystallographic defects as well as imperfections due to pattern delineation are affecting the flux pattern on macroscopic scale. In a third example we use the MOFE to demonstrate that pulsed laser irradiation of Yba2Cu3O7 thin films with UV photons of moderate flux causes an enhancement of the critical current.

1983 ◽  
Vol 44 (C5) ◽  
pp. C5-449-C5-454 ◽  
Author(s):  
P. Baeri ◽  
M. G. Grimaldi ◽  
E. Rimini ◽  
G. Celotti

1982 ◽  
Vol 97 (1) ◽  
pp. 1-7 ◽  
Author(s):  
R.K. Sharma ◽  
S.K. Bansal ◽  
R. Nath ◽  
G.P. Srivastava

1990 ◽  
Vol 191 ◽  
Author(s):  
Toshiyuki Nakamiya ◽  
Kenji Ebihara ◽  
P. K. John ◽  
B. Y. Tong

ABSTRACTThe dynamics of melting and ablation of high Tc YBa2Cu3O7-x superconducting thin films flashed by a pulsed KrF excimer laser(λ=248nm) or a pulsed Nd-YAG laser (λ =1.06μ m) were studied numerically. The fundamental model during a pulsed laser irradiation was a one-dimensional heat conduction equation. The finite element method was applied to solve the equation including the temperature dependence of the thermal conductivity of YBaCuO thin films. In addition, the microstructure of YBa2Cu3O7-x bulk(l.5mm thick) flashed by a pulsed XeCl excimer laser (λ =308nm) was investigated by scanning electron microscopy (SEM) in order to estimate the threshold incident laser energy density for surface melting and ablation. The good agreements between the numerical calculations and the experimental results were obtained.


1996 ◽  
Vol 106 ◽  
pp. 193-197 ◽  
Author(s):  
G. De Cesare ◽  
S. La Monica ◽  
G. Maiello ◽  
G. Masini ◽  
E. Proverbio ◽  
...  

2007 ◽  
Vol 7 (4) ◽  
pp. 1414-1418 ◽  
Author(s):  
E. Alvarez-Zauco ◽  
E. V. Basiuk ◽  
R. Castañeda-Guzmán ◽  
R. Y. Sato-Berrú ◽  
J. M. Saniger-Blesa ◽  
...  

1983 ◽  
Vol 13 ◽  
Author(s):  
J.J. Cao ◽  
K. Rose ◽  
O. Aina ◽  
W. Katz ◽  
J. Norton

ABSTRACTWe present a numerical model for the calculation of the temperature rise caused by pulsed laser irradiation of a thin film/substrate structure. This model includes phase changes in both the thin film and the substrate. The inclusion of phase changes results in more complex thermal behavior and significantly affects melt durations. This model was applied to the AuGe/GaAs system. Morphological observation using the scanning electron microscope and SIMS profiles provides experimental verification for the numerical calculations.


1998 ◽  
Vol 127-129 ◽  
pp. 674-678 ◽  
Author(s):  
E Haro-Poniatowski ◽  
M Jouanne ◽  
J.F Morhange ◽  
C Julien ◽  
R Diamant ◽  
...  

2012 ◽  
Vol 39 ◽  
pp. 286-294 ◽  
Author(s):  
O. García ◽  
J.J. García-Ballesteros ◽  
D. Munoz-Martin ◽  
S. Núñez-Sánchez ◽  
M. Morales ◽  
...  

1999 ◽  
Vol 25 (2) ◽  
pp. 131-133
Author(s):  
P. E. Shepelyavyi ◽  
V. P. Kunets ◽  
E. V. Mikhailovskaya ◽  
I. Z. Indutnyi

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