Landau, Ginzburg, Devonshire and others
Materials Science
2020-08-17 v1
Abstract
Macroscopic modelling of ferroelectric properties refers usually to Landau-Ginzburg-Devonshire theory. This paper questions the meaningfulness of this term, discussing contributions of the three authors to what is supposed to be a theory. The limitations of every contribution are analyzed. In the main text and, to more extent in the Supplementary Material, the Landau theory is presented from an unusual perspective starting from simple mechanical models of spontaneous symmetry breaking and finishing by the Ising model. The aim of the presentation is to emphasize along with the qualitative breakthroughs the approximate character of macroscopic modelling associated with the above three authors.
Cite
@article{arxiv.2008.06269,
title = {Landau, Ginzburg, Devonshire and others},
author = {Arkady P. Levanyuk and I. Burc Misirlioglu and M. Baris Okatan},
journal= {arXiv preprint arXiv:2008.06269},
year = {2020}
}
Comments
37 pages, 16 figures, submitted to Ferroelectrics