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Computer Simulation of Pulsed Laser Ablation for YBaCuO Superconducting Films

Published online by Cambridge University Press:  16 February 2011

Toshiyuki Nakamiya ,
Kenji Ebihara ,
P. K. John  and
B. Y. Tong
Toshiyuki Nakamiya
Affiliation:
Computer Center, Kyushu Tokai University, Toroku, Ohe-machi, Kumamoto 862, Japan
Kenji Ebihara
Affiliation:
Department of Electrical Engineering and Computer Science, Kumamoto University, Kurokami, Kumamoto 860, Japan
P. K. John
Affiliation:
Department of Physics, The University of Western Ontario, London, Ontario, Canada, N6A 3K7.
B. Y. Tong
Affiliation:
Department of Physics, The University of Western Ontario, London, Ontario, Canada, N6A 3K7.
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Abstract

The 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.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 191: Symposium N – Laser Ablation for Materials Synthesis , 1990 , 109
Copyright
Copyright © Materials Research Society 1990

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References

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