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

页码：1632 / 1635

页数：4

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