Sk. Mishra et D. Pandey, EFFECT OF PARTICLE-SIZE ON THE FERROELECTRIC BEHAVIOR OF TETRAGONAL AND RHOMBOHEDRAL PB(ZRXTI1-X)O-3 CERAMICS AND POWDERS, Journal of physics. Condensed matter, 7(48), 1995, pp. 9287-9303
The effect of particle size on the structure and ferroelectric behavio
ur of PZT powders and ceramics with bulk tetragonal and rhombohedral c
ompositions is reported. To our knowledge, this is the first report of
particle size effects for the rhombohedral PZT composition. It is poi
nted out that, below a certain critical size, the formation of ferroel
ectric domains is not energetically favourable. As a result, the ferro
electric transition may be suppressed due to depolarization and/or ela
stic energy contributions.