Negative bulk modulus and possibility of loss of elastic stability near tricritical transitions in thin films on substrates
| Autor: | Ibrahim Burc Misirlioglu, Arkadi P. Levanyuk, S. A. Minyukov |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
QC310.15 Thermodynamics
Condensed Matter - Materials Science Bulk modulus Phase transition Materials science Condensed matter physics QC1 General Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Stability (probability) Electronic Optical and Magnetic Materials Crystal Phase (matter) 0103 physical sciences QC176-176.9 Solids. Solid state physics Thin film 010306 general physics 0210 nano-technology Elastic modulus Sign (mathematics) |
| Zdroj: | Ferroelectrics. 500:116-128 |
| ISSN: | 1563-5112 0015-0193 |
| DOI: | 10.1080/00150193.2016.1236608 |
| Popis: | Within the Landau-like approach we study anomalies of elastic moduli at phase transitions in thin films on substrates. We consider the case where, similar to many experimental cases, the first-order transition in free crystal would convert into a second order in the film if the system remained homogeneous. It is shown, however, that apart from its questionable thermodynamic profitability, the homogeneous state of low-symmetry phase may become absolutely unstable which is signaled by changing of sign of its bulk modulus. Comment: 17 pages, 3 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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