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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
发表期刊Journal of Alloys and Compounds
ISSN09258388
卷号698页码:276-283
摘要In 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入藏号20165203185548
EI主题词Oxygen vacancies
EI分类号443.1 Atmospheric Properties - 708.1 Dielectric Materials - 804.2 Inorganic Compounds - 812.1 Ceramics - 933.1 Crystalline Solids
引用统计
文献类型期刊论文
条目标识符http://ir.sic.ac.cn/handle/331005/25495
专题中国科学院上海硅酸盐研究所
作者单位1.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
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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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