Colossal permittivity of (Li, Nb) co-doped TiO2 ceramics

doi:10.1016/j.ceramint.2019.03.080

	Colossal permittivity of (Li, Nb) co-doped TiO2 ceramics
	Li, Wenlong1,2,3 ; Liu, Zhifu 1,2; Zhang, Faqiang 1; Sun, Qingbo 4; Liu, Yun 4; Li, Yongxiang1,2,3
	2019-06-15
发表期刊	CERAMICS INTERNATIONAL (IF:5.1[JCR-2023],4.7[5-Year])
ISSN	0272-8842
卷号	45 期号:9 页码:11920-11926
发表状态	已发表
DOI	10.1016/j.ceramint.2019.03.080
摘要	In 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.
关键词	Colossal permittivity Co-doped TiO2 ceramic Modified Debye equation Multiple polarization
收录类别	EI ; SCIE ; SCI
语种	英语
资助项目	973 Program[2015CB654604] ; 973 Program[2015CB654605]
WOS研究方向	Materials Science
WOS类目	Materials Science, Ceramics
WOS记录号	WOS:000466253500099
出版者	ELSEVIER SCI LTD
EI入藏号	20191106643247
EI主题词	Ceramic materials ; Cobalt compounds ; Dielectric losses ; High-k dielectric ; Lithium compounds ; Oxide minerals ; Permittivity ; Polarization ; Solid state reactions ; Titanium dioxide
WOS关键词	GIANT DIELECTRIC PERMITTIVITY ; RELAXATION ; GRAIN ; AL
原始文献类型	Article
引用统计	正在获取...
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/40871
专题	物质科学与技术学院_特聘教授组_李永祥组物质科学与技术学院_硕士生
通讯作者	Liu, Zhifu; Li, Yongxiang
作者单位	1.Chinese Acad Sci, Shanghai Inst Ceram, CAS Key Lab Inorgan Funct Mat & Devices, 1295 Dingxi Rd, Shanghai 200050, Peoples R China 2.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100034, Peoples R China 3.Shanghai Tech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China 4.Australian Natl Univ, Res Sch Chem, Canberra, ACT 0200, Australia
第一作者单位	物质科学与技术学院
通讯作者单位	物质科学与技术学院
推荐引用方式 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):11920-11926.
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),11920-11926.
MLA	Li, Wenlong,et al."Colossal permittivity of (Li, Nb) co-doped TiO2 ceramics".CERAMICS INTERNATIONAL 45.9(2019):11920-11926.