Structural and electric properties of barium strontium titanate based ceramic composite as a humidity sensor

被引：25
作者：
Ke, Shanming [1 ,2 ]
Huang, Haitao [1 ]
Fan, Huiqing [2 ]
Chan, H. L. W. [1 ]
Zhou, L. M. [3 ]
机构：
[1] Hong Kong Polytech Univ, Dept Appl Phys & Mat Res Ctr, Kowloon, Hong Kong, Peoples R China
[2] NW Polytech Univ, Sch Mat Sci, State Key Lab Solidificat Proc, Xian 710072, Peoples R China
[3] Hong Kong Polytech Univ, Dept Engn Mech, Kowloon, Hong Kong, Peoples R China
来源：
SOLID STATE IONICS | 2008年 / 179卷 / 27-32期
关键词：
BST; ferroelectrics; conductivity; humidity sensor;
D O I：
10.1016/j.ssi.2007.12.014
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Ba0.6Sr0.4TiO3-MgTiO3 (BST-MT) composite ceramics were prepared by reaction of BST powders with molten MgCl2. The sintered composites exhibit a five orders of magnitude decrease in the dc resistivity as the relative humidity (RH) was increased from 5 to 92%. The ac conductivity of the samples obeys a power law at different temperatures within the frequency range of 10 Hz to 10 MHz. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：1632 / 1635
页数：4
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