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Colossal permittivity of (Li, Nb) co-doped TiO2 ceramics
Li, Wenlong; Liu, Zhifu; Zhang, Faqiang; Sun, Qingbo; Liu, Yun; Li, Yongxiang
2019-06-15
Source PublicationCERAMICS INTERNATIONAL
ISSN0272-8842
Volume45Issue:9Pages:11920
SubtypeArticle
AbstractIn this work, (Li, Nb) co-doped TiO2 ceramics (LNTOx, x < 0.1), were synthesized through a conventional solid state reaction method. As revealed by X-ray diffraction (XRD) spectra, all LNTO ceramics exhibited pure tetragonal rutile structure. The LNTO0.01 ceramic showed a colossal permittivity over 7000 and a low dielectric loss (tg delta < 0.06) in a wide frequency range of 10(2) Hz-10(7) Hz. The dielectric spectra under DC biases were tested at different temperatures. The experimental data could fit the modified Debye equation well. It was found that there are multiple dielectric polarization mechanisms in LNTO ceramics including space charge polarization, relaxor-type relaxation, polaron hopping and dipole polarization related with localized electrons.
KeywordColossal permittivity Co-doped TiO2 ceramic Modified Debye equation Multiple polarization
DOI10.1016/j.ceramint.2019.03.080
Language英语
WOS Research AreaMaterials Science
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27048
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Li, Wenlong,Liu, Zhifu,Zhang, Faqiang,et al. Colossal permittivity of (Li, Nb) co-doped TiO2 ceramics[J]. CERAMICS INTERNATIONAL,2019,45(9):11920.
APA Li, Wenlong,Liu, Zhifu,Zhang, Faqiang,Sun, Qingbo,Liu, Yun,&Li, Yongxiang.(2019).Colossal permittivity of (Li, Nb) co-doped TiO2 ceramics.CERAMICS INTERNATIONAL,45(9),11920.
MLA Li, Wenlong,et al."Colossal permittivity of (Li, Nb) co-doped TiO2 ceramics".CERAMICS INTERNATIONAL 45.9(2019):11920.
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