Microwave dielectric response of (Sr0.80Pb0.20)TiO3 based ferroelectric composites

Autor:	D. Garcia, Yoshitaka Somiya, L.E. Cross, José Antonio Eiras, Amar S. Bhalla, J. de Los S. Guerra
Rok vydání:	2005
Předmět:	Materials science Dielectric Atmospheric temperature range Ferroelectricity chemistry.chemical_compound chemistry Materials Chemistry Ceramics and Composites Strontium titanate Dielectric loss Lead titanate Electroceramics Composite material Microwave
Zdroj:	Journal of the European Ceramic Society. 25:2089-2092
ISSN:	0955-2219
DOI:	10.1016/j.jeurceramsoc.2005.03.014
Popis:	This paper reports the results of measurements on the dielectric properties of strontium lead titanate ferroelectric composites (i.e. non-ferroelectric magnesium oxide, MgO, added to the Sr 0.80 Pb 0.20 TiO 3 , SPT, matrix) as a function of temperature over a wide frequency range from 0.05 to 2 GHz. The results showed that SPT–MgO composites have a strong dielectric dispersion (around 500 MHz) for the temperature range of 100–280 K. On the other hand, at room temperature a suppression of such relaxation was observed with low dielectric loss factors ∼5 × 10 −4 over the entire range of frequency from 0.05 to 2 GHz. Such results evidence the potential use of SPT–MgO composites for room temperature tunable microwave applications.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::71f0dfb4cd0c6eebac3f972d6568450b https://doi.org/10.1016/j.jeurceramsoc.2005.03.014 Zobrazit plný text záznamu Full Text from ScienceDirect