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Influence of Processing Parameters on Microstructure of Pulsed Laser Deposited Au Thin Films

Published online by Cambridge University Press:  26 February 2011

Andreas Kulovits ,
John Leonard  and
Jorg Wiezorek
Andreas Kulovits
Affiliation:
akk8@pitt.eduUniversity of PittsburghDept. of Mechanical Engineering and Materials Science848 Benedum HallPittsburgh PA 15261United States
John Leonard
Affiliation:
jleonard@pitt.edu, University of Pittsburgh, Dept. of Mechanical Engineering and Materials Science, 848 Benedum Hall, Pittsburgh, PA, 15261, United States
Jorg Wiezorek
Affiliation:
wiezorek@pitt.edu, University of Pittsburgh, Dept. of Mechanical Engineering and Materials Science, 848 Benedum Hall, Pittsburgh, PA, 15261, United States
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Abstract

It has long been recognized that thin film polycrystalline microstructures are determined by the thermodynamics and kinetics associated with physical vapor deposition, but it is quite process dependent and not easily quantified. We have examined the microstructure in polycrystalline Au films obtained by pulse laser deposition (PLD) under various conditions and interpret the results in terms of three fundamental parameters common to all physical vapor deposition: Flux kinetic energy, substrate temperature, and deposition rate. With this model, it is predicted that nanocrystalline films are formed in the limits of low temperature, flux, and high deposition rate. The deposited films are analyzed with X-ray diffraction and SEM to determine texture and grain morphology, which are found to fit well within the process maps.

Keywords

Authin filmlaser ablation
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 979: Symposium HH – Thermodynamics and Kinetics of Phase Transformations in Inorganic Materials , 2006 , 0979-HH11-20
Copyright
Copyright © Materials Research Society 2007

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