Raman study of low temperature phase transitions in bismuth titanate, Bi4Ti3O12
- 1 August 1994
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 76 (3) , 1819-1823
- https://doi.org/10.1063/1.357700
Abstract
An anomalous line narrowing along with the appearance of several new lines on cooling Bi4Ti3O12 ceramics, indicates a subtle phase transition in the 150–200 K region. In the same temperature range, anomalies in dielectric properties (dielectric constant, coercive field, and spontaneous polarization) of single‐crystal Bi4Ti3O12 were reported. A possible subtle monoclinic‐orthorhombic phase change, combined with a continuous ordering of dipoles associated with Bi3+ lone pair electrons and TiO6 octahedra, may be responsible for these results.This publication has 17 references indexed in Scilit:
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