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Erschienen in: Journal of Materials Science: Materials in Electronics 19/2019

03.09.2019

Effect of the second phase on the microwave dielectric properties of strontium titanate

verfasst von: Yi-Ting Su, Pei-Yi Hsu, Wei-Hsing Tuan, Chung-Ya Tsao

Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 19/2019

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Abstract

In this study, the effects of the second phase, either in the form of particulate or of lamella, on the microwave dielectric properties are investigated. Strontium titanate (SrTiO3) is considered to be a model system for this examination. Although SrTiO3 is an intermediate compound between SrO and TiO2, the solubilities of SrO and TiO2 in SrTiO3 are extremely low. Excess SrO and excess TiO2 lead to the formation of second phases as Sr3Ti2O7 and TiO2, respectively, within SrTiO3. TiO2 exists as particulates, and its presence marginally affects the microwave dielectric properties of SrTiO3. The Sr3Ti2O7 lamella is located on the long axis of the elongated SrTiO3 grain. With the formation of the Sr3Ti2O7 lamella, the permittivity decreases, and the product of quality factor and resonant frequency increases.

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Metadaten
Titel
Effect of the second phase on the microwave dielectric properties of strontium titanate
verfasst von
Yi-Ting Su
Pei-Yi Hsu
Wei-Hsing Tuan
Chung-Ya Tsao
Publikationsdatum
03.09.2019
Verlag
Springer US
Erschienen in
Journal of Materials Science: Materials in Electronics / Ausgabe 19/2019
Print ISSN: 0957-4522
Elektronische ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-019-02114-1

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