Strain Induced Incommensurate Structures in Vicinity of the Reconstructive Phase Transitions
Materials Science
2015-10-08 v2 Other Condensed Matter
Abstract
General conditions controlling formation of incommensurate phases (IPs) in crystals undergoing reconstructive phase transitions (RPTs) are analyzed in the framework of a model free phenomenological approach. A universal trend to stabilizing such intermediate phases in vicinity of RPTs stems from the fact that certain high-order improper Lifshitz invariants reduce at RPTs to ones bi-linearly coupling critical displacement gradients and strains. Developed approach introduces a universal mechanism for formation both premartensite IPs and complex structures with giant unit cells found in some elemental crystals at high pressure.
Keywords
Cite
@article{arxiv.1503.01617,
title = {Strain Induced Incommensurate Structures in Vicinity of the Reconstructive Phase Transitions},
author = {A. Korzhenevskii and V. Dmitriev},
journal= {arXiv preprint arXiv:1503.01617},
year = {2015}
}