Work

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

Year: 2016

Type: article

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.

Source: Ferroelectrics

DOI: 10.1080/00150193.2016.1236608

Authors: A. P. Levanyuk, S. A. Minyukov, I. B. Misirlioglu

Institutions: Russian Academy of Sciences, A.V. Shubnikov Institute of Crystallography, Federal Scientific Research Centre Crystallography and Photonics, Sabancı Üniversitesi

Language: English

Topic: Ferroelectric and Piezoelectric Materials

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2531019465

FWCI: 0.256

Cites: 15

Cited by: 7

Related to: 10