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VOLUME 49 (1989) | ISSUE 4 | PAGE 202
Dielectric anomalies in nonferroelectric phase transitions
A defect model is presented as an alternative explanation to the two-dimensional fluctuation theory of Kitaev et al. for the changes in the dielectric constant near the antiferrodistortive phase transition temperature ofKMnF3. It is further suggested that a similar explanation may be given for the unusual critical exponents reported for CsH2P04.