Journal ArticleDOI
DiC12: Magnesium titanate microwave dielectric ceramics
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TLDR
In this paper, the effect of powder preparation processes, sintering temperature and cooling rate on the densification, microstructure and microwave dielectric properties of magnesium titanate ceramics was discussed.Abstract:
Magnesium titanate ceramics have been prepared by a chemical route (Pechini method) and by the conventional mixed oxide route. Dielectric properties of sintered samples were measured at 8 GHz by the Hakki and Coleman technique. Microstructures were examined by optical microscopy and scanning electron microscopy. The use of the chemical method enabled the sintering temperature to be lowered and good quality, single phase, dense ceramics were obtained at temperatures down to 1150°C. Dielectric constants were approximately 17.5 and Q values up to 21200 were obtained at 8 GHz. The effect of powder preparation processes, sintering temperature and cooling rate on the densification, microstructure and microwave dielectric properties are discussed.read more
Citations
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Ultrafine ceria powders via glycine-nitrate combustion
TL;DR: In this article, an interpretation based on an adiabatic flame temperature, for different fuel-to-oxidant ratios, has been proposed for the nature of combustion and its correlation with the powder characteristics.
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Microstructural engineering of microwave dielectric ceramics
Robert Freer,Feridoon Azough +1 more
TL;DR: In this article, the microstructures of microwave dielectric ceramics have been,engineered at the levels of the grain, grain boundary, sub-grain and the lattice to optimise the critical Dielectric parameters.
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Improved high q value of MgTiO3-CaTiO3 microwave dielectric ceramics at low sintering temperature
Cheng-Liang Huang,Ming Hung Weng +1 more
TL;DR: In this article, the effect of B 2 O 3 addition on the microwave dielectric properties and the microstructures of 0.95MgTiO 3 -0.05CaTiO3 ceramics were investigated.
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In vivo response of porous hydroxyapatite and beta-tricalcium phosphate prepared by aqueous solution combustion method and comparison with bioglass scaffolds.
Samir Ghosh,Samit Kumar Nandi,Biswanath Kundu,Someswar Datta,Dipak Kumar De,Sujit Roy,Debabrata Basu +6 more
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Dielectric properties of CaCu3Ti4O12 based multiphased ceramics
TL;DR: In this paper, a coprecipitation method was used to synthesize the perovskite CaCu3Ti4O12 (CCT), and three main types of materials were obtained for both powders and sintered ceramics.
References
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Journal ArticleDOI
A Dielectric Resonator Method of Measuring Inductive Capacities in the Millimeter Range
B.W. Hakki,P.D. Coleman +1 more
TL;DR: In this article, a novel technique for the measurement of dielectric and magnetic properties of a homogeneous isotropic medium in the range of approximately 3 to 100 kmc is described.
Journal ArticleDOI
Recent development of dielectric resonator materials and filters in Japan
TL;DR: In this paper, the authors present the recent development in Japan of resonator materials and filters, which are more compact and applicable to high power operation, and their main applications are cellular mobile radio systems and SHF-TV systems using direct broadcasting satellite.
Journal ArticleDOI
Application of Dielectric Resonators in Microwave Components
J.K. Plourde,Chung-Li Ren +1 more
TL;DR: In this article, the authors present a complete blbliography to English language publications on dielectric resonators and present several examples of oscillator applications, as well as a tutorial for new 2-, 4-, and 6GHz bandpass filters.
Journal ArticleDOI
High-Permittivity Temperature-Stable Ceramic Dielectrics with Low Microwave Loss
TL;DR: In this article, the properties of temperature-stable compositions in the systems Ca(Zr,Ti)O3 and (Ba,Sr),Zr O3 and CaZrO3 were investigated.
Journal ArticleDOI
Structure refinements of Mg2TiO4, MgTiO3 and MgTi2O5 by time-of-flight neutron powder diffraction
B. A. Wechsler,R. B. Von Dreele +1 more
TL;DR: MgTiO 3 cristallise dans R3 avec affinement jusqu'a 0.0257 as discussed by the authors, and MgTi 2 O 5 CRISTALLISE dans Bbmm et possede une structure pseudobrookite
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