Influence of Quantum Zero Point Energy on the Ferroelectric Behavior of Isomorphous Systems

Abstract

The influence of the relative amount of zero point energy in the double potential wells associated with reorientable dipoles in ferroelectric systems has been investigated. The quantitative dependence of the dielectric constant ε, the saturation polarization P_S0 and the critical temperature T_C as a function of zero point energy =łΩ₀/2 = k_BT^S was determined from the appropriate quantum effective field expressions and available data from TSCC (ferroelectric at T < T_C ≅131 K) and TSCB (quantum paraelectric at T ≈ 0 K) were analyzed.

Keywords:

• Zero point energy
• ferroelectric phase transition
• quantum paraelectrics
• effective field approach

Acknowledgments

Financial support from DGICyT through Grant BFM2000-0032 and from the State Key Program for Basic Research of China (G1998061408) is gratefully acknowledged.