Abstract

Calcium titanate does not exhibit piezoelectric behaviour. However, in present study such behaviour is observed in calcium titanate prepared by sol-gel synthesis and densified by field assisted sintering. Presumably, the instability of regular TiO6 octahedra results in the off-centering of titanium positions in nanostructured bulk calcium titanate. As a consequence, piezoelectric behavior is observed in calcium titanate which is referred to pseudo-piezoelectricity. This particular response is of great interest in biomedicine because it can improve osseointegration of implant materials.

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