Microwave dielectric properties of BaTiO3 and Ba0.5Sr0.5TiO3 thin films on (001) MgO

Autor:	L. M. B. Alldredge, Jeffrey M. Pond, Steven W. Kirchoefer, Wontae Chang
Rok vydání:	2009
Předmět:	Permittivity Materials science Physics and Astronomy (miscellaneous) Condensed matter physics Dielectric heating Dielectric loss Dielectric Thin film Microwave Dielectric spectroscopy DC bias
Zdroj:	Applied Physics Letters. 95:222902
ISSN:	1077-3118 0003-6951
Popis:	The microwave properties of BaTiO3 and Ba0.5Sr0.5TiO3 films were characterized as a function of in-plane film strain, crystallographic direction, film distortion, and dc bias. The strain dependence of BaTiO3 and Ba0.5Sr0.5TiO3 films showed an opposite pattern at room temperature, going from compression to tension, or vice versa. At zero bias, the dielectric constant and dielectric loss showed little dependence on direction ([100] and [110]). However, the tunability was consistently smaller along the [110] direction than along [100]. These observations agreed well with our previous work on how polarizations (both ionic and spontaneous) form and contribute to the nonlinear dielectric behavior.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e46cc96b9b9fc4e115a07b522eb3df98 https://doi.org/10.1063/1.3264051 Zobrazit plný text záznamu