Negative bulk modulus and possibility of loss of elastic stability near tricritical transitions in thin films on substrates

Levanyuk, A. P. and Minyukov, S. A. and Mısırlıoğlu, Burç (2016) Negative bulk modulus and possibility of loss of elastic stability near tricritical transitions in thin films on substrates. Ferroelectrics, 500 (1). pp. 116-128. ISSN 0015-0193 (Print) 1563-5112 (Online)

[thumbnail of Invited article] PDF (Invited article)
Negative_bulk_modulus_and_possibility_of_loss_of_elastic_stability_near_tricritical_transitions_in_thin_films_on_substrates.pdf
Restricted to Registered users only

Download (677kB) | Request a copy

Abstract

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 advantages, the homogeneous state of low-symmetry phase may become absolutely unstable which is signaled by changing of sign of its bulk modulus.
Item Type: Article
Uncontrolled Keywords: Films on substrates, phase transition anomalies, elastic moduli
Subjects: Q Science > QC Physics > QC1 General
Q Science > QC Physics > QC310.15 Thermodynamics
Q Science > QC Physics > QC176-176.9 Solids. Solid state physics
Divisions: Faculty of Engineering and Natural Sciences > Academic programs > Materials Science & Eng.
Faculty of Engineering and Natural Sciences
Depositing User: Burç Mısırlıoğlu
Date Deposited: 08 Nov 2016 10:40
Last Modified: 09 Sep 2017 20:49
URI: https://research.sabanciuniv.edu/id/eprint/30711

Actions (login required)

View Item
View Item