Signatures of polarity in ferroelastic domain walls and antiphase boundaries of SrTiO<sub>3</sub> and other perovskites

Author(s)
W. Schranz, A. Tröster, I. Rychetsky
Abstract

In the present work we study the polar properties of domain walls using a recently developed method of combining layer group analysis with order parameter symmetry [Schranz et al. PRB 100 (2019) 184105]. Using this method we obtain a detailed overview on the microscopic and macroscopic properties of domain walls which we can quantify with results from Landau-Ginzburg-Devonshire theory. Recently, we have applied [Schranz et al. PRB 102 (2020) 184101] the method to analyse the symmetry and polar properties of ferroelastic twin walls and antiphase boundaries in SrTiO3. Here we discuss the elastic anomalies observed in SrTiO3 at various temperatures in the light of these findings.

Organisation(s)
Physics of Functional Materials, Computational and Soft Matter Physics
External organisation(s)
Czech Academy of Sciences
Journal
Journal of Alloys and Compounds
Volume
890
No. of pages
7
ISSN
0925-8388
DOI
https://doi.org/10.1016/j.jallcom.2021.161775
Publication date
01-2022
Peer reviewed
Yes
Austrian Fields of Science 2012
103018 Materials physics
Keywords
ASJC Scopus subject areas
Mechanics of Materials, Mechanical Engineering, Metals and Alloys, Materials Chemistry
Portal url
https://ucris.univie.ac.at/portal/en/publications/signatures-of-polarity-in-ferroelastic-domain-walls-and-antiphase-boundaries-of-srtio3-and-other-perovskites(c8e61a14-2720-4156-8926-598de5c9af49).html