Phenomenological Treatment of Antiferroelectric Transition under Hydrostatic Pressure

概要

論文の詳細を見る
By applying Kittel's antiferroelectric polarizations (P_a and P_b) and Cross' ferroelectric polarization P_m and antiferroelectric polarization P_n to the free energy function for ferroelectrics under hydrostatic pressure, the Gibbs function for antiferroelectrics under hydrostatic pressure is given in terms of the pressure, polarization and electric field. On the basis of this energy function, dielectric properties such as the pressure dependence of permittivity or spontaneous polarization and the electric field dependence of permittivity are clearly explained, and the so-called double hysteresis loop under hydrostatic pressure is explained fairly well for antiferroelectrics of the second and the first order transitions. Moreover, these analyses are confirmed to be appropriate by comparing with the experimental results for antiferroelectric Pb_2MgWO_6, etc.
社団法人応用物理学会の論文
1976-04-05