Background dielectric permittivity: material constant or fitting parameter?

Abstract

The concept of background dielectric constant proposed by Tagantsev, together with the distinction between critical and non-critical electric polarizations as a natural extension for the order parameter of ferroelectric phase transitions, is critically discussed. It is argued and exemplified that, even if these quantities can be very useful for obtaining qualitative and semi-quantitative results from phenomenological modeling, they cannot be introduced in a self-consistent manner.

11 pages, no figures

Cited by in corpus (7)

• Analytical model and dynamical phase-field simulation of terahertz transmission across ferroelectrics
• Theory of nonlinear terahertz susceptibility in ferroelectrics
• Stability and low-energy orientations of interphase boundaries in multiaxial ferroelectrics: Phase-field simulations
• Theory of terahertz pulse transmission through ferroelectric nanomembranes
• Influence of a Realistic Multiorbital Band Structure on Conducting Domain Walls in Perovskite Ferroelectrics
• Dynamics of Conducting Ferroelectric Domain Walls
• Effect of the depolarizing field on the domain structure of an improper ferroelectric