Microwave Dielectric Property and Crystal Structure of R2O3 (R = Rare Earth)-BaO-MO (M = Cu and Zn) System

The microwave dielectric properties of the R2BaMO5 (R= rare earth, M=Cu and Zn) ceramics have been investigated widely in order to clarify the relationships between the microwave dielectric properties and the crystal structure of R2BaMO5 ceramics. The variations in epsilon r are attributed to the in...

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Bibliographic Details
Published in:Key engineering materials 2004-01, Vol.269, p.191-194
Main Authors: Higashida, Yutaka, Kan, Akinori, Ogawa, Hirotaka, Ohsato, Hitoshi
Format: Article
Language:English
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Summary:The microwave dielectric properties of the R2BaMO5 (R= rare earth, M=Cu and Zn) ceramics have been investigated widely in order to clarify the relationships between the microwave dielectric properties and the crystal structure of R2BaMO5 ceramics. The variations in epsilon r are attributed to the increase in the ionic polarizabilities of the R ions. The temperature coefficient of resonant frequency of these ceramics showed a similar tendency to depend on the differences in the ionic radii of the R ions; the optimum value was - 1.6 ppm/DGC in the Dy2BaZnO5 ceramics.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/www.scientific.net/KEM.269.191