Answers are grounded in this paper and cite their sources.
A group-theoretical analysis was made of ferroelastic strains induced by octahedral tilts in 227 Pnma perovskites of various compositions (oxides, fluorides, halides, chalcogenides). It was shown that the anion type affects the degree of rotational and ferroelastic distortions. The most intense distortions are characteristic of chalcogenides due to the increased covalence of chemical bonds. The established correlations make it possible to predict the ferroelastic properties in perovskites depending on their chemical composition.
No takes yet. Share an insight, caveat, or question.
Trotsenko et al. (2026) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: