On the Imbalance of the Dielectric Constant of the PbLixNb3xZr0.51Ti0.49-4xO3 Compound

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In the present paper, the dielectric behaviour of the PbLixNb3xZr0.51Ti0.49-4xO3 ( PLNZT) system is analyzed. It is shown that the decrease in the dielectric constant with respect to an increase of the impurity content may be due to an aggregation trend of the interacting off-centre dipoles rather than due to cooperative phenomena which renormalizes the dipole moment of the off-centre impurity.
IC/IR/96/20 ICTP-Trieste preprint, latex file, one figure upon request

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