Ferroelectric Properties of Bismuth Titanate Ceramics by Sm3+/V5+ Substitution

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The ferroelectricity of Bi3.2Sm0.8Ti3O12 (BST) and Bi3.2Sm0.8Ti2.97V0.03O12 (BSTV)ceramics prepared at 1100oC by a conventional ceramic technique is investigated. These ceramics possess random-oriented polycrystalline structure. The remanent polarization (Pr) and coercive field (Ec) of the BST ceramics are 16 µC/cm2 and 62kV/cm, respectively. Furthermore, V5+ substitution improves the Pr value of the BST ceramics up to 25µC/cm2, which is larger than that of the BST ceramics. Therefore, the co-substitution of Sm3+ and V5+ in Bi4Ti3O12 (BIT) ceramics is effective for the improvement of its ferroelectricity.

Info:

Periodical:

Key Engineering Materials (Volumes 280-283)

Edited by:

Wei Pan, Jianghong Gong, Chang-Chun Ge and Jing-Feng Li

Pages:

167-170

DOI:

10.4028/www.scientific.net/KEM.280-283.167

Citation:

M. Chen et al., "Ferroelectric Properties of Bismuth Titanate Ceramics by Sm3+/V5+ Substitution", Key Engineering Materials, Vols. 280-283, pp. 167-170, 2005

Online since:

February 2007

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Price:

$35.00

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