Compressible spherical dipolar glass model of relaxor ferroelectrics
Disordered Systems and Neural Networks
2015-06-11 v1 Materials Science
Abstract
The interactions between the dielectric polarization and the fluctuations of the strain (stress) tensor in relaxor ferroelectrics are shown to give rise to the anisotropy of the anharmonic P4-term in the Landau-type free energy, however, the harmonic P2-term is still properly described by the rigid spherical random bond--random field model. These are the essential features of the compressible spherical dipolar glass model, which is used to calculate the singularities of the specific heat near field-induced critical points. The results agree with recent high-resolution calorimetric experiments in PMN [110].
Keywords
Cite
@article{arxiv.1210.6530,
title = {Compressible spherical dipolar glass model of relaxor ferroelectrics},
author = {R. Pirc and Z. Kutnjak and N. Novak},
journal= {arXiv preprint arXiv:1210.6530},
year = {2015}
}
Comments
5 pdf pages, 4 figures