Ie. Chupis, ON THE DIELECTRIC-CONSTANT ANOMALY IN THE ANTIFERROMAGNETIC PHASE OF YMNO3, Low temperature physics (Woodbury, N.Y.), 24(8), 1998, pp. 606-608
It is proposed that the triangular antiferromagnetic beta-structure pr
ecedes the triangular antiferromagnetic alpha-structure observed in YM
nO3 by neutron diffraction studies at 4.2 K. The experimental observat
ion of the anomalous behavior of the dielectric constant below Neel te
mperature is attributed to the phase transition between beta and alpha
configurations. (C) 1998 American Institute of Physics. [S1063-777X(9
8)01408-X].