ICCAS OpenIR
Influence of thermal treatments on the low frequency conductivity and microwave dielectric loss of CaTiO3 ceramics
Hu, Peng1; Jiao, Huan1; Wang, Chun-Hai2; Wang, Xiao-Ming2; Ye, Shi2; Jing, Xi-Ping2; Zhao, Fei3; Yue, Zhen-Xin3
2011-03-25
Source PublicationMATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
ISSN0921-5107
Volume176Issue:5Pages:401-405
AbstractWe 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.
KeywordIntrinsic Defect Microwave Dielectric Loss Conductivity Catio3
DOI10.1016/j.mseb.2010.12.010
Indexed BySCI
Language英语
WOS IDWOS:000289662000005
PublisherELSEVIER SCIENCE BV
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Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/73370
Collection中国科学院化学研究所
Corresponding AuthorJiao, Huan
Affiliation1.Shaanxi Normal Univ, Sch Chem & Mat Sci, Key Lab Macromol Sci Shaanxi Prov, Xian 710062, Peoples R China
2.Peking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China
3.Tsinghua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
Recommended Citation
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,2011,176(5):401-405.
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,176(5),401-405.
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 176.5(2011):401-405.
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