Influence of thermal treatments on the low frequency conductivity and   microwave dielectric loss of CaTiO3 ceramics

doi:10.1016/j.mseb.2010.12.010

CORC > 北京大学 > 化学与分子工程学院

	Influence of thermal treatments on the low frequency conductivity and microwave dielectric loss of CaTiO3 ceramics
	Hu, Peng ; Jiao, Huan ; Wang, Chun-Hai ; Wang, Xiao-Ming ; Ye, Shi ; Jing, Xi-Ping ; Zhao, Fei ; Yue, Zhen-Xin
刊名	materials science and engineering b advanced functional solid state materials
	2011
关键词	Intrinsic defect Microwave dielectric loss Conductivity CaTiO3 DEFECT CHEMISTRY ELECTRICAL-CONDUCTIVITY COMPLEX PERMITTIVITY NON-STOICHIOMETRY CALCIUM TITANATE AC-IMPEDANCE RESONATOR FILTERS CRYSTAL MGTIO3
DOI	10.1016/j.mseb.2010.12.010
英文摘要	We prepared CaTiO3 by solid state reactions as a model for Ti-based microwave dielectric ceramics to investigate the influence of thermal treatment on conductivity and microwave dielectric loss. The intrinsic defect concentrations of CaTiO3 may be modified by air-quenching, air-annealing and thermal treatment in various atmospheres such as O-2. Ar and air. CaTiO3 has p-type conductance implying that calcium vacancy V-Ca(x) may be the dominant defect. The variation in defect concentration influences the low frequency conductivity but not the microwave dielectric loss. The V-Ca(x), concentration in the air-quenched sample was found to be lower than that in the air-annealed one. However, the former showed similar to 8% deterioration and the latter showed a 14% improvement in the Q x f value. The data, therefore, suggests that other factors such as thermally induced strain rather than intrinsic defects may influence the microwave dielectric loss. (C) 2010 Elsevier B.V. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000289662000005&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Materials Science, Multidisciplinary; Physics, Condensed Matter; SCI(E); EI; 8; ARTICLE; 5; 401-405; 176
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/240386]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Hu, Peng,Jiao, Huan,Wang, Chun-Hai,et al. Influence of thermal treatments on the low frequency conductivity and microwave dielectric loss of CaTiO3 ceramics[J]. materials science and engineering b advanced functional solid state materials,2011.
APA	Hu, Peng.,Jiao, Huan.,Wang, Chun-Hai.,Wang, Xiao-Ming.,Ye, Shi.,...&Yue, Zhen-Xin.(2011).Influence of thermal treatments on the low frequency conductivity and microwave dielectric loss of CaTiO3 ceramics.materials science and engineering b advanced functional solid state materials.
MLA	Hu, Peng,et al."Influence of thermal treatments on the low frequency conductivity and microwave dielectric loss of CaTiO3 ceramics".materials science and engineering b advanced functional solid state materials (2011).