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Colossal permittivity and dielectric relaxation of (Li, In) Co-doped ZnO ceramics
Huang, Dong1,2,3; Liu, Zhifu1; Li, Yongxiang1,2; Liu, Yun4
2017
Source PublicationJournal of Alloys and Compounds
ISSN09258388
Volume698Pages:276-283
AbstractIn this study, a colossal permittivity up to 3800 and a low dielectric loss of 0.11 at 1 kHz have been obtained from the (Li, In) co-doped ZnO ceramic [Zn(1−2x)(Li, In)xO] when x was 0.5%. Electric modulus spectroscopy and impedance analysis were used to investigate the origin of its high permittivity. Two relaxation peaks and a dielectric anomaly were observed in the temperature range of 293–363 K. According to the Debye relaxation theory, the low- and high-temperature relaxation peaks with activation energies of 0.09 eV and 0.29 eV, have been attributed to the hopping of singly and doubly charged oxygen vacancies, which are created by lithium and indium ions doping and oxygen deficiency during sintering process. After thermal treatment in an oxidizing atmosphere, the peaks related to the singly and doubly charged oxygen vacancies disappear and the permittivity reduces to ∼460 at room-temperature. From the X-ray photoelectron spectra (XPS), the concentrations of oxygen vacancies decrease after the O2-annealing process. The results reveal that the oxygen defects would be the main origin of the colossal permittivity of co-doped ZnO at room-temperature range. © 2016 Elsevier B.V.
DOI10.1016/j.jallcom.2016.12.113
EI Accession Number20165203185548
EI KeywordsOxygen vacancies
EI Classification Number443.1 Atmospheric Properties - 708.1 Dielectric Materials - 804.2 Inorganic Compounds - 812.1 Ceramics - 933.1 Crystalline Solids
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Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/25495
Collection中国科学院上海硅酸盐研究所
Affiliation1.CAS Key Lab of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China;
2.School of Physical Science and Technology, ShanghaiTech University, Shanghai; 201210, China;
3.Department of Physics, The University of Hong Kong, China;
4.Research School of Chemistry, The Australian National University, ACT; 2601, Australia
Recommended Citation
GB/T 7714
Huang, Dong,Liu, Zhifu,Li, Yongxiang,et al. Colossal permittivity and dielectric relaxation of (Li, In) Co-doped ZnO ceramics[J]. Journal of Alloys and Compounds,2017,698:276-283.
APA Huang, Dong,Liu, Zhifu,Li, Yongxiang,&Liu, Yun.(2017).Colossal permittivity and dielectric relaxation of (Li, In) Co-doped ZnO ceramics.Journal of Alloys and Compounds,698,276-283.
MLA Huang, Dong,et al."Colossal permittivity and dielectric relaxation of (Li, In) Co-doped ZnO ceramics".Journal of Alloys and Compounds 698(2017):276-283.
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