Structure and Dielectric Behavior of La-doped BaTiO3 Ceramics

被引：11
作者：
Li, Wei [1 ]
Xu, Zhijun [1 ]
Chu, Ruiqing [1 ]
Fu, Peng [1 ]
机构：
[1] Liaocheng Univ, Coll Mat Sci & Engn, Liaocheng 252059, Peoples R China
来源：
CHINESE CERAMICS COMMUNICATIONS | 2010年 / 105-106卷
关键词：
BaTiO(3); Doping; Grain size; Dielectric properties; BARIUM-TITANATE CERAMICS; FERROELECTRIC BATIO3; GRAIN-SIZE;
D O I：
10.4028/www.scientific.net/AMR.105-106.252
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：
BaTiO(3) ceramics doped with 1, 2, 3 and 4 mol% La were prepared by sol-gel method. The effects of La doping on structure and dielectric characteristics of Ba(1-x)La(x)TiO(3) were investigated. The results show that: All the powders calcined at 800 degrees C were found to be perovskite structure with cubic phase. Ba(1-x)La(x)TiO(3) were sintered at 1300 degrees C, phase transition behavior appeared from tetragonal phase to cubic phase with increasing La-doping level. As the doping concentration increases, the grain growth of the Ba(1-x)La(x)TiO(3) ceramics was controlled efficiently and Curie point shifted to lower temperature. The grain size decreased from 20 mu m with 0 mol% La doped to 0.5 mu m with 4 mol% La doped. The Curie point shift rate was 22 degrees C/ mol% with increasing La content. The dielectric constant of La doped Ba(1-x)La(x)TiO(3) ceramics increased with increasing La content and a maximum value of 8900 was attained with 4 mol% La doped.
引用
收藏
页码：252 / 254
页数：3
相关论文
共 14 条
  • [1] Grain size and grain boundary-related effects on the properties of nanocrystalline barium titanate ceramics
    Buscaglia, V.
    Buscaglia, M. T.
    Viviani, M.
    Mitoseriu, L.
    Nanni, P.
    Trefiletti, V.
    Piaggio, P.
    Gregora, I.
    Ostapchuk, T.
    Pokorny, J.
    Petzelt, J.
    [J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2006, 26 (14) : 2889 - 2898
  • [2] The size-effect on luminescence properties of BaTiO3:Eu3+ nanocrystallites prepared by the sol-gel method
    Hreniak, D
    Strek, W
    Amami, J
    Guyot, Y
    Boulon, G
    Goutaudier, C
    Pazik, R
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2004, 380 (1-2) : 348 - 351
  • [3] Microstructural and optical investigations of sol-gel derived ferroelectric BaTiO3 nanocrystalline films determined by spectroscopic ellipsometry
    Hu, Z. G.
    Li, Y. W.
    Zhu, M.
    Zhu, Z. Q.
    Chu, J. H.
    [J]. PHYSICS LETTERS A, 2008, 372 (24) : 4521 - 4526
  • [4] Kuwabara M, 1997, J AM CERAM SOC, V80, P2590, DOI 10.1111/j.1151-2916.1997.tb03161.x
  • [5] Structure and electrical properties of BaTiO3 prepared by sol-gel process
    Li, Wei
    Xu, Zhijun
    Chu, Ruiqing
    Fu, Peng
    Hao, Jigong
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 482 (1-2) : 137 - 140
  • [6] Electrical and structural characteristics of lanthanum-doped barium titanate ceramics
    Morrison, FD
    Sinclair, DC
    West, AR
    [J]. JOURNAL OF APPLIED PHYSICS, 1999, 86 (11) : 6355 - 6366
  • [7] Dielectric properties of lanthanum substituted barium titanate microwave ceramics
    Narang, Sukhleen Bindra
    Kaur, Dalveer
    Bahel, Shalini
    [J]. MATERIALS LETTERS, 2006, 60 (25-26) : 3179 - 3182
  • [8] The influence of doping style on the grain growth of BaTiO3 ceramics
    Qi, JQ
    Li, LT
    Li, W
    Wang, YL
    Gui, ZL
    [J]. MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2003, 99 (1-3): : 214 - 216
  • [9] Size effects on the quantum paraelectric SrTiO3 nanocrystals
    Song, TK
    Kim, J
    Kwun, SI
    [J]. SOLID STATE COMMUNICATIONS, 1996, 97 (02) : 143 - 147
  • [10] Effects of grain size on the dielectric properties and tunabilities of sol-gel derived Ba(Zr0.2Ti0.8)O3 ceramics
    Tang, XG
    Wang, J
    Wang, XX
    Chan, HLW
    [J]. SOLID STATE COMMUNICATIONS, 2004, 131 (3-4) : 163 - 168
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