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	A novel microwave dielectric ceramic Ca2Zn4Ti16O38: Preparation and dielectric properties
	Zhao, F ; Yue, ZX ; Pei, J ; Gui, ZL ; Li, LT
	2010-05-10 ; 2010-05-10
关键词	microwave dielectric ceramics dielectric properties sol-gel process Ca2Zn4Ti16O38 compound CRYSTAL-STRUCTURE HIGH PERMITTIVITY MICROSTRUCTURE SUBSTITUTION CRICHTONITE RESONATORS OXIDE Chemistry, Inorganic & Nuclear Chemistry, Physical
中文摘要	A novel microwave dielectric powder with composition of Ca2Zn4Ti16O38 was synthesized through a citrate sol-gel process. The development of crystalline phases with heat-treating temperature for the gel derived powders was evaluated by using thermo-gravimetric analysis and X-ray powder diffraction analysis techniques. The pure phase of Ca2Zn4Ti16O38 with crichtonite crystal structure was obtained at relatively low temperature of 1000 degrees C. The synthesized powder has high reactivity and the dense ceramics with single crystalline phase were obtained at low sintering temperature of 1100 degrees C. Impedance spectroscopy and microwave dielectric measurements on sintered samples showed the present compound to be a modest dielectric insulator with excellent dielectric properties of epsilon(r)similar to 47-49, Qf value similar to 27,800-31,600 GHz and tau(f)similar to + 45 to + 50 ppm/degrees C. It shows comparable microwave dielectric properties to other moderate-permittivity microwave dielectrics, but much lower sintering temperature of 1100 degrees C. (c) 2006 Elsevier Inc. All rights reserved.
语种	英语 ; 英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE ; SAN DIEGO ; 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/20453]
专题	清华大学
推荐引用方式 GB/T 7714	Zhao, F,Yue, ZX,Pei, J,et al. A novel microwave dielectric ceramic Ca2Zn4Ti16O38: Preparation and dielectric properties[J],2010, 2010.
APA	Zhao, F,Yue, ZX,Pei, J,Gui, ZL,&Li, LT.(2010).A novel microwave dielectric ceramic Ca2Zn4Ti16O38: Preparation and dielectric properties..
MLA	Zhao, F,et al."A novel microwave dielectric ceramic Ca2Zn4Ti16O38: Preparation and dielectric properties".(2010).

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