High dielectric permittivity and ultralow dielectric loss in Nb-doped SrTiO3 ceramics

被引：15

作者：

Luo, Lichen ^{[1
]}

Li, Jinglei ^{[1
]}

Wang, Mingwen ^{[1
]}

Yang, Shuai ^{[1
]}

Wu, Jie ^{[1
]}

Gao, Xiangyu ^{[1
]}

Li, Chunchun ^{[1
,2
]}

Du, Wenya ^{[1
]}

Zhang, Lin ^{[1
]}

Li, Fei ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Ctr Dielect Res, Elect Mat Res Lab, Key Lab,Minist Educ & Int, Xian 710049, Shaanxi, Peoples R China

[2] Guilin Univ Technol, Coll Mat Sci & Engn, Guangxi Key Lab Opt & Elect Mat & Devices, Guilin 541004, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2022年 / 48卷 / 19期

基金：

中国国家自然科学基金;

关键词：

High dielectric permittivity; Low dielectric loss; Nb-doped SrTiO 3; PINNED DEFECT-DIPOLES; COLOSSAL PERMITTIVITY; GIANT PERMITTIVITY; RELAXATION; LI;

D O I：

10.1016/j.ceramint.2022.06.157

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this study, we prepared a series of Nb-doped SrTiO3 ceramics sintered in both air and N-2 atmospheres. The X-ray diffraction (XRD) analysis indicated that all samples had a pure cubic phase perovskite structure with no secondary phase. The dielectric test showed that the Nb-doped SrTiO3 ceramics had a high dielectric permittivity (> 3 x 10(4)) and low dielectric loss (< 0.004) over a broad temperature range from-100 to 300 ?C with a breakdown strength over 20 kV/cm. The dielectric performance is attributed to the designated Ti '(Ti)- V-O(..)- Ti-Ti ' deep-lattice-defect states localising weak-hopping electrons to generate high defect-dipole concentrations, as verified by systematic X-ray photoelectron spectroscopy (XPS) experiments. This study offers a route for designing other types of high dielectric permittivity ceramics.

引用

页码：28438 / 28443

页数：6

共 32 条

[1] Dielectric relaxation modes in bismuth-doped SrTiO3:: The relaxor behavior
Ang, C
Yu, Z
Lunkenheimer, P
Hemberger, J
Loidl, A
[J]. PHYSICAL REVIEW B, 1999, 59 (10): : 6670 - 6674
[2] Oxygen-vacancy-related low-frequency dielectric relaxation and electrical conduction in Bi:SrTiO3
Ang, C
Yu, Z
Cross, LE
[J]. PHYSICAL REVIEW B, 2000, 62 (01) : 228 - 236
[3] A dielectric polymer with high electric energy density and fast discharge speed
Chu, Baojin
Zhou, Xin
Ren, Kailiang
Neese, Bret
Lin, Minren
Wang, Qing
Bauer, F.
Zhang, Q. M.
[J]. SCIENCE, 2006, 313 (5785) : 334 - 336
[4] Pinning effect of different shape second-phase particles on grain growth in polycrystalline: numerical and analytical investigations
Du, Lifei
Yang, Shaomei
Zhang, Peng
Du, Huiling
[J]. COMPOSITE INTERFACES, 2018, 25 (04) : 357 - 368
[5] Colossal permittivity of Sb and Ga co-doped rutile TiO2 ceramics
Fan, Jiangtao
Leng, Senlin
Cao, Zhenzhu
He, Weiyan
Gao, Yanfang
Liu, Jinrong
Li, Guorong
[J]. CERAMICS INTERNATIONAL, 2019, 45 (01) : 1001 - 1010
[6] MICROSTRUCTURES OF SRTIO3 INTERNAL BOUNDARY-LAYER CAPACITORS DURING AND AFTER PROCESSING AND RESULTANT ELECTRICAL-PROPERTIES
FUJIMOTO, M
KINGERY, WD
[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1985, 68 (04) : 169 - 173
[7] Optical response of high-dielectric-constant perovskite-related oxide
Homes, CC
Vogt, T
Shapiro, SM
Wakimoto, S
Ramirez, AP
[J]. SCIENCE, 2001, 293 (5530) : 673 - 676
[8] Hu WB, 2013, NAT MATER, V12, P821, DOI [10.1038/NMAT3691, 10.1038/nmat3691]
[9] Colossal dielectric constants in La15/8Sr1/8NiO4
Krohns, S.
Lunkenheimer, P.
Loidl, A.
[J]. FUNDAMENTALS AND TECHNOLOGY OF MULTIFUNCTIONAL OXIDE THIN FILMS (SYMPOSIUM G, EMRS 2009 SPRING MEETING), 2010, 8
[10] Pinning effects on the dielectric and ferroelectric properties of Mn-doped Ba(Zr0.06Ti0.94)O3 ceramics
Kuang, S. J.
Tang, X. G.
Wu, J. B.
Jiang, Y. P.
Liu, Q. X.
[J]. FUNCTIONAL AND ELECTRONIC MATERIALS, 2011, 687 : 354 - 358

← 1 2 3 4 →