On the Study of Symmetry and Order Parameter in Displacive Antiferroelectric Phase Transition

摘要

For the paraelectric–antiferroelectric phase transition, an axial vector R is selected as the order parameter to reflect the symmetry of antiferroelectric phase. The one-dimensional antiferroelectrics of Kittel type and the antiferroelectrics PbZrO3 are selected as examples. The satisfying results are obtained.