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Microstructure and Optical Properties of Au–Y2O3-stabilized ZrO2 Nanocomposite Films

Published online by Cambridge University Press:  03 March 2011

George Sirinakis ,
Rezina Siddique ,
Christos Monokroussos ,
Michael A. Carpenter  and
Alain E. Kaloyeros
George Sirinakis
Affiliation:
College of Nanoscale Science and Engineering, The University at Albany—State Universityof New York, Albany, New York 12203
Rezina Siddique
Affiliation:
College of Nanoscale Science and Engineering, The University at Albany—State Universityof New York, Albany, New York 12203
Christos Monokroussos
Affiliation:
College of Nanoscale Science and Engineering, The University at Albany—State Universityof New York, Albany, New York 12203
Alain E. Kaloyeros*
Affiliation:
College of Nanoscale Science and Engineering, The University at Albany—State Universityof New York, Albany, New York 12203
*
b) Address all correspondence to this author. e-mail: mcarpenter@uamail.albany.edu
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Abstract

Nanocomposite films consisting of gold nanoparticles embedded in an yttria stabilized zirconia (YSZ) matrix were synthesized at room temperature by radio-frequency co-sputtering from YSZ and Au targets at a 5 mTorr working pressure. The films were subsequently annealed for 2 h in 1 atm argon, with the annealing temperature varied from 600 to 1000 °C in steps of 100 °C. The composition, microstructure, and optical properties of the films were characterized as a function of annealing temperature by Rutherford backscattering spectrometry, scanning electron microscopy, Auger electron spectroscopy, x-ray diffraction, and absorption spectroscopy. An optical absorption band due to the surface plasmon resonance (SPR) of the Au nanoparticles was observed around a wavelength of 600 nm. Furthermore, the SPR band full width at half-maximum exhibited an inverse linear dependence on the radius of the Au nanoparticle, with a slope parameter A = 0.18, indicating a weak interaction between the YSZ matrix and the Au nanoparticles. The experimentally observed SPR dependence on nanoparticle size is discussed within the context of the Mie theory and its size-dependent optical constants.

Keywords

Grain growthNanoparticleOptical properties

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Type
Articles
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Journal of Materials Research , Volume 20 , Issue 9 , September 2005 , pp. 2516 - 2522
Copyright
Copyright © Materials Research Society 2005

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