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Synthesis and nonlinear optical characterization of nanocrystallineγ-alumina produced by in-flight thermal plasma route

Published online by Cambridge University Press:  22 February 2011

P. Boroojerdian
Affiliation:
Department of Physics, Tarbiat Moallem University, 1571914911, Tehran, Iran
M. H. Majles Ara*
Affiliation:
Department of Physics, Tarbiat Moallem University, 1571914911, Tehran, Iran
Z. Javadi
Affiliation:
Department of Physics, Tarbiat Moallem University, 1571914911, Tehran, Iran
B. Akbari
Affiliation:
Department of Physics, Tarbiat Moallem University, 1571914911, Tehran, Iran
T. Karemi
Affiliation:
Department of Physics, Qom Branch, Islamic Azad University Qom, 3714668669, Qom, Iran
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Abstract

Using a plasma spray torch, nanocrystalline γ-alumina powder has been synthesized in a reactor through oxidation of micron-size aluminum metal powder by in-flight thermal plasma processing. The synthesized particles were characterized by X-ray diffraction (XRD) and field emission transmission electron microscopy (FE-TEM). The particle size was in the range of ~7 to ~56 nm and spherical in shape. Furthermore the nonlinear refractive and absorptive indices of the sample under various intensities using Z-scan and moiré deflectometry techniques by a CW He-Ne laser at 632.8 nm wavelength were measured.

Type
Research Article
Copyright
© EDP Sciences, 2011

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