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

M. Chen; Zu Li Liu; Kai Lun Yao

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

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 280-283Ferroelectric Properties of Bismuth Titanate...

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

Abstract:

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.

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Key Engineering Materials (Volumes 280-283)

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167-170

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https://doi.org/10.4028/www.scientific.net/KEM.280-283.167

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February 2007

Authors:

M. Chen, Zu Li Liu, Kai Lun Yao

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Ceramic, Doping, Ferroelectric, Microstructure

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