Influence of rare earth ions on BaO-TiO sub(2)-rare earth oxide ceramics for microwave applications

The dielectric ceramic materials, 0.143BaO-0.714TiO sub(2)-0.143 rare earth oxides (REO sub(x)), have unique dielectric properties at microwave frequencies, which depend on the rare earth element (RE=Pr, Nd, Sm). In order to study the effect of the rare earth ions on dielectric properties, infrared...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics, Part 2: Letters Part 2: Letters, 1993-01, Vol.32 (4), p.1712-1715
Main Authors: Fukuda, Koichi, Fujii, Itsuhiro, Kitoh, Ryozo, Cho, Yasuo, Awai, Ikuo
Format: Article
Language:English
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Summary:The dielectric ceramic materials, 0.143BaO-0.714TiO sub(2)-0.143 rare earth oxides (REO sub(x)), have unique dielectric properties at microwave frequencies, which depend on the rare earth element (RE=Pr, Nd, Sm). In order to study the effect of the rare earth ions on dielectric properties, infrared reflection spectra of these ceramics were measured from 50 to 4000 cm super(-1) at room temperature. These data were analyzed according to the model proposed by Gervais and Piriou. Also, the fourth-order dielectric constants of these materials were estimated for the purpose of investigating the relationship between the dielectric loss and the anharmonic terms in the potential energy.
ISSN:0021-4922