Size effect on the ferroelectric phase transition inultrafine particles
- 1 April 1988
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 37 (10), 5852-5855
- https://doi.org/10.1103/physrevb.37.5852
Abstract
We report a size effect on the ferroelectric phase transition in ultrafine particles. The samples were synthesized by an alkoxide method. The size was determined by x-ray analysis with the aid of Scherrer’s equation. When the particle size is less than 50 nm, the transition temperature , determined by Raman scattering, decreases from its bulk value (500 °C) as the size decreases. The temperature is described by an empirical expression, =500-588.5/(D-12.6) (°C), where D is the average particle size (nm).
Keywords
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