Low loss microwave ferroelectric ceramics for high power tunable devices

Autor:	S. S. Redozubov, A. I. Dedyk, O. N. Trubitsyna, Alexei Kanareykin, I. M. Gaidamaka, N.F. Kartenko, Elizaveta Nenasheva
Rok vydání:	2010
Předmět:	Materials science business.industry Ferroelectric ceramics Dielectric Microstructure visual_art Electric field Phase (matter) Dielectric heating Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Optoelectronics Ceramic business Microwave
Zdroj:	Journal of the European Ceramic Society. 30:395-400
ISSN:	0955-2219
DOI:	10.1016/j.jeurceramsoc.2009.04.008
Popis:	In this paper we report the influence of the composition and concentration of Mg-containing additions such as Mg 2 TiO 4 , MgO and a mixture of Mg 2 TiO 4 –MgO on ceramics based on a mixture of BaTiO 3 /SrTiO 3 . Phase relations, crystal structure, microstructures, microwave dielectric properties ( ɛ , tan δ ) and DC tunability have been studied over a wide range of frequencies. The temperature dependence of the dielectric properties has been measured as well. Among the compositions synthesized were low loss bulk ferroelectrics with dielectric constants in the range 150–800 and relatively high DC tunabilities (up to 1.49 under a DC electric field of 40 kV/cm). These materials can be used for high power tunable microwave devices.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::07f9007fcd30798821011cddcf94eb46 https://doi.org/10.1016/j.jeurceramsoc.2009.04.008 Zobrazit plný text záznamu Full Text from ScienceDirect