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KMID : 1059519980420060652
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Journal of the Korean Chemical Society
1998 Volume.42 No. 6 p.652 ~ p.656
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Application of Response Surface Method for Modelling of Room Temperature Resistivity of (Ba0.8-xSr0.2)YxTiO3
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Moon Hyung-Chul
Noh Tae-Yong
Kim Seung-Won
Lee Chul
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Abstract
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(Ba0.8-xSr0.2)YxTiO3 (BSYT) powders were prepared by the calcination of metal-oxalate precipitates, which were obtained by wet chemical method using Ba, Sr, Y and Ti-nitrates and oxalic acid. Yttrium content, sintering temperature and cooling rate were taken as experimental factors. Response surface method was applied to modelling of the room temperature resistivity of BSYT. The results indicated that the Yttrium content had larger effect on the room temperature resistivity and minimum room temperature resistivity was at Yttrium content of 0.24 mol%. The validity of a modelling equation was confirmed by comparing the measured room temperature resistivity with the calculated one.
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