Frequency and temperature dependent dielectric and conductivity behavior of 0.95(K0.5Na0.5)NbO3-0.05BaTiO3 ceramic

被引：87
|
作者：
Liu, Laijun [1 ]
Wu, Meixia [1 ]
Huang, Yanmin [1 ]
Yang, Zhao [1 ]
Fang, Liang [1 ]
Hu, Changzheng [1 ]
机构：
[1] Guilin Univ Technol, Key Lab New Proc Technol Nonferrous Met & Mat, State Key Lab Breeding Base Nonferrous Met & Spec, Minist Educ,Coll Mat Sci & Engn, Guilin 541004, Guangxi, Peoples R China
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2011年 / 126卷 / 03期
关键词：
Sodium potassium niobate; Dielectric relaxation; Conductivity; PIEZOELECTRIC PROPERTIES; ELECTRICAL-PROPERTIES; MICROSTRUCTURE; MNO2;
D O I：
10.1016/j.matchemphys.2010.12.046
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Dielectric and conductivity measurements were carried out on the 0.95(K0.5Na0.5)NbO3-0.05BaTiO(3) (KNN-5BT) ceramic both as a function of temperature (similar to 350-850 K) and frequency (40 Hz to 100 MHz). A high-temperature dielectric relaxation above Curie temperature (similar to 590 K) was observed and analyzed with the Cole-Cole function. Frequency dependent conductivity was analyzed with an augmented Jonscher relation and exhibited a universal conductivity behavior. The activation energy of dielectric relaxation was estimated to be 1.09 eV. It could be attributed to the thermal motion of double ionized oxygen vacancy or to the formation of defect dipoles between the acceptor ion and charge compensating oxygen vacancies. The mechanism for both the high-temperature dielectric relaxation and the frequency dependent conductivity was proposed based on a possible mode of incorporation of Ba2+ and Ti4+ ions into the KNN lattice sites. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：769 / 772
页数：4
相关论文
共 50 条
  • [21] Improvementinthepiezoelectrictemperaturestabilityof(K0.5Na0.5)NbO3ceramics
    ZHAO JingBo DU HongLiang QU ShaoBo ZHANG HongMei XU Zhuo The College of ScienceAir Force Engineering UniversityXian China State Key Laboratory of Electrical Insulation and Power EquipmentXian Jiaotong UniversityXian China Electronic Materials Research LaboratoryKey Laboratory of Educational MinistryXian Jiaotong UniversityXian China
    Chinese Science Bulletin, 2011, 56 (22) : 2389 - 2393
  • [22] Peculiarities of Modified Ceramics (Na0.5Bi0.5)TiO3–BaTiO3–(K0.5Na0.5)NbO3
    G. M. Kaleva
    E. D. Politova
    A. V. Mosunov
    T. S. Ilina
    D. A. Kiselev
    Russian Journal of Physical Chemistry A, 2023, 97 : 965 - 970
  • [23] Temperature dependent electrical properties of 0.95[(K0.5Na0.5)(1-x)AgxNbO3]-0.05LiSbO3 ceramics
    P. Palei
    P. Kumar
    S. Sonia
    Journal of Electroceramics, 2012, 29 : 211 - 215
  • [24] Fabrication of [Li0.05(K0.5Na0.5)0.95]NbO3 transparent ceramics using conventional sintering technique
    Fujii, Ichiro
    Hirai, Kentaro
    Imai, Takahito
    Wada, Takahiro
    JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, 2019, 127 (12) : 905 - 911
  • [25] Dielectric and piezoelectric properties of (K0.5Na0.5)NbO3-Ba(Zr0.05Ti0.95)O3 lead-free ceramics
    Lin, Dunmin
    Kwok, K. W.
    Chan, H. W. L.
    APPLIED PHYSICS LETTERS, 2007, 91 (14)
  • [26] Effect of silver content on the phase transition and electrical properties of 0.95 [(K0.5Na0.5)NbO3]-0.05LiSbO3 ceramics
    Palei, P.
    Kumar, P.
    SOLID STATE SCIENCES, 2012, 14 (09) : 1338 - 1342
  • [27] High-temperature dielectrics based on 0.95(0.94Bi0.5Na0.5TiO3-0.07BiAlO3)-0.05K0.5Na0.5NbO3
    Wang, Xin
    Fan, Huiqing
    Ren, Pengrong
    Liu, Kun
    CERAMICS INTERNATIONAL, 2019, 45 (09) : 12360 - 12365
  • [28] Effect of Particle Size on the Dielectric and Piezoelectric Properties of 0.95(K Na-0.5(0.5))NbO3-0.05BaTiO(3) Lead-free Piezoelectric Ceramics
    Bae, Seon-Gi
    Shin, Hyea-Gyiung
    Chung, Kwang-Hyun
    Yoo, Ju-Hyun
    Im, In-Ho
    TRANSACTIONS ON ELECTRICAL AND ELECTRONIC MATERIALS, 2015, 16 (04) : 179 - 182
  • [29] Improvement in the piezoelectric temperature stability of (K0.5Na0.5)NbO3 ceramics
    Zhao JingBo
    Du HongLiang
    Qu ShaoBo
    Zhang HongMei
    Xu Zhuo
    CHINESE SCIENCE BULLETIN, 2011, 56 (22): : 2389 - 2393
  • [30] Improvement in the piezoelectric temperature stability of(K0.5Na0.5)NbO3 ceramics
    ZHAO JingBo 1
    2 State Key Laboratory of Electrical Insulation and Power Equipment
    3 Electronic Materials Research Laboratory
    Science Bulletin, 2011, (22) : 2389 - 2393
12345