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

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

Ba 0.6Sr 0.4TiO 3–MgTiO 3 (BST–MT) composite ceramics were prepared by reaction of BST powders with molten MgCl 2. 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 o...

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Veröffentlicht in:Solid state ionics 2008-09, Vol.179 (27), p.1632-1635
Hauptverfasser: Ke, Shanming, Huang, Haitao, Fan, Huiqing, Chan, H.L.W., Zhou, L.M.
Format: Artikel
Sprache:eng
Schlagworte:
BST
Conductivity
Ferroelectrics
Humidity sensor
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Zusammenfassung:Ba 0.6Sr 0.4TiO 3–MgTiO 3 (BST–MT) composite ceramics were prepared by reaction of BST powders with molten MgCl 2. 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.
ISSN:0167-2738
1872-7689
DOI:10.1016/j.ssi.2007.12.014