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Experimental assessment of the inhibition of reduction of Ca2+-doped barium titanate in a reducing atmosphere

Published online by Cambridge University Press:  31 January 2011

Tsang-Tse Fang  and
Jyh-Tzong Shuei
Tsang-Tse Fang
Affiliation:
Department of Materials Science and Engineering, National Cheng Kung University, Tainan, Taiwan 701, Republic of China
Jyh-Tzong Shuei
Affiliation:
Department of Materials Science and Engineering, National Cheng Kung University, Tainan, Taiwan 701, Republic of China
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Abstract

Several experiments have been conducted to assess the possible mechanisms for the inhibition of reduction of Ca2+-doped barium titanate in a reducing atmosphere. Three methods, i.e., conventional, semiwet, and citrate processes, have been used to prepare the powders. It was found that the formation mechanism would influence the occupation of Ca2+ in the B site. Moreover, it was concluded that Ca2+ occupation of the B site is the major cause for the inhibition of reduction of Ca2+-doped barium titanate. Ti deficiency would be the driving force for Ca2+ to occupy the B site.

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Type
Articles
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Journal of Materials Research , Volume 14 , Issue 5 , May 1999 , pp. 1910 - 1915
Copyright
Copyright © Materials Research Society 1999

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