Microwave dielectric properties and sintering behaviors of (Mg0.95Ni0.05)TiO3-CaTiO3 ceramic system

The microwave dielectric properties and sintering behaviors of the new ceramic system (1 - x)(Mg0.95Ni0.05)TiO3-xCaTiO3 (x < = 0.1) prepared by conventional solid state route were investigated. The compositions with x = 0.02-0.1 resulted in the mixture of two main phases, (Mg0.95Ni0.05)TiO3 and C...

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Veröffentlicht in:	Journal of alloys and compounds 2009-03, Vol.472 (1-2), p.451-455
Hauptverfasser:	SHEN, Chun-Hsu, HUANG, Cheng-Liang
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Dielectric properties of solids and liquids Dielectrics, piezoelectrics, and ferroelectrics and their properties Exact sciences and technology Permittivity (dielectric function) Physics
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Zusammenfassung:	The microwave dielectric properties and sintering behaviors of the new ceramic system (1 - x)(Mg0.95Ni0.05)TiO3-xCaTiO3 (x < = 0.1) prepared by conventional solid state route were investigated. The compositions with x = 0.02-0.1 resulted in the mixture of two main phases, (Mg0.95Ni0.05)TiO3 and CaTiO3, and a second phase (Mg0.95Ni0.05)Ti2O5, which was favorable at high temperatures. The two-phased system was confirmed by both XRD and EDS analysis. Zero tauf can be achieved by appropriately adjusting the compositional ratio. Specimen with x = 0.06 possessed an excellent combination of microwave dielectric properties: r 20.8, Q X f 79,200 GHz and tauf 1.2 ppm/ deg C. It is proposed as a candidate material for GPS patch antennas and ISM band filters.
ISSN:	0925-8388 1873-4669
DOI:	10.1016/j.jallcom.2008.04.099