Effect of Mg doping on dielectric properties of alumina

descriptionPublicationkeyboard_double_arrow_right Article 15 Jul 1996 English Publisher:AIP PublishingJournal:Journal of Applied Physics, volume 80, pages 1,028-1,032 (issn: 0021-8979, eissn: 1089-7550,

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Authors: Mollá, J.; Moreno Botella, Rodrigo María; Ibarra, A.;

doi: 10.1063/1.362836

handle: 10261/87208

Effect of Mg doping on dielectric properties of alumina

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Abstract

Alumina samples with different magnesia concentrations between 0.02 and 1 wt% have been sintered and characterized by electron microscopy. Their dielectric properties between 1 kHz and 15 GHz are studied. Different dielectric behaviors are found for different magnesia concentrations. A model based mainly on dipolar relaxation processes is proposed to explain the results obtained. The effect of magnesia on dielectric properties of alumina shown in the present work should be considered in the engineering designs for heating systems of future fusion machines and other applications.

Related Organizations

Complutense University of Madrid
Spain
Spanish National Research Council
Spain

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