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The Origin and Implications of (111)-Textured Grains Obtained via Nucleation and Growth of Solids in Pulsed-Laser-Quenched Al Films on SiO2

Published online by Cambridge University Press:  26 February 2011

J. B. Choi ,
Min H. Choi ,
U.-J. Chung ,
A. B. Limanov  and
James S. Im
J. B. Choi
Affiliation:
[email protected] UniversityProgram in Materials Science, Applied Physics and Applied MathematicsNew York NY 10027United States
Min H. Choi
Affiliation:
[email protected], Columbia University, Program in Materials Science, Applied Physics and Applied Mathematics, New York, NY, 10027, United States
U.-J. Chung
Affiliation:
[email protected], Columbia University, Program in Materials Science, Applied Physics and Applied Mathematics, New York, NY, 10027, United States
A. B. Limanov
Affiliation:
[email protected], Columbia University, Program in Materials Science, Applied Physics and Applied Mathematics, New York, NY, 10027, United States
James S. Im
Affiliation:
[email protected], Columbia University, Program in Materials Science, Applied Physics and Applied Mathematics, New York, NY, 10027, United States
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Abstract

We have investigated excimer laser irradiation of 2000-Å-thin as-deposited Al films on SiO2. Microstructural analysis of the irradiated films conducted with AFM and EBSD techniques reveals that there exists a wide energy density interval over which large equaxed grains with a strong (111) texture are obtained. Based on thermal, transformational, and microstructural considerations, we propose a heterogeneous nucleation model to account for the observed behaviors, and discuss the implication of the model on the phenomenon of heterogeneous nucleation of crystalline solids in condensed systems as regards the thermodynamic role played by the orientation of subcritical clusters.

Keywords

Allaser annealingtexture
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 979: Symposium HH – Thermodynamics and Kinetics of Phase Transformations in Inorganic Materials , 2006 , 0979-HH11-50
Copyright
Copyright © Materials Research Society 2007

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References

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