Ferroelectric Properties and Microstructures of Dy2O3-Doped Bi4Ti3O12 Ceramics

Abstract:

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The electrical properties of Dy-doped bismuth titanate, Bi4-xDyxTi3O12 (BDT) ceramics prepared by a conventional electroceramic technique have been investigated. XRD analyses revealed Bi-layered perovskite structure in all samples, and indicted that Bi ions were only substituted near the Ti-O octahedron layers by Dy ions. SEM micrographs show randomly oriented and plate-like morphology. The remanent polarization (Pr) and coercive field (Ec) of the BDT ceramic with x = 0.75 were above 19μC/cm2 and 50KV/cm, respectively. The large value of remanent polarization and low coercive field of Dy-doped bismuth titanate ceramics promote these materials to potential applications.

Info:

Periodical:

Edited by:

Yiwang Bao, Danyu Jiang, Li Tian and Jianghong Gong

Pages:

226-229

DOI:

10.4028/www.scientific.net/KEM.492.226

Citation:

J. Liu et al., "Ferroelectric Properties and Microstructures of Dy2O3-Doped Bi4Ti3O12 Ceramics", Key Engineering Materials, Vol. 492, pp. 226-229, 2012

Online since:

September 2011

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$35.00

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