Colossal permittivity and dielectric relaxation of (Li, In) Co-doped ZnO ceramics

doi:10.1016/j.jallcom.2016.12.113

	Colossal permittivity and dielectric relaxation of (Li, In) Co-doped ZnO ceramics
	Huang, Dong 1,2,3; Liu, Zhifu 1; Li, Yongxiang 1,2; Liu, Yun 4
刊名	Journal of Alloys and Compounds
	2017
卷号	698 页码:276-283
ISSN号	09258388
DOI	10.1016/j.jallcom.2016.12.113
英文摘要	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.
内容类型	期刊论文
源URL	[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
推荐引用方式 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.