Correlations between interatomic bond strain and Curie temperature for complex oxides based on quasielastic model of perovskite structure. (25th April 2020)

• Record Type: Journal Article
• Authors: Geguzina, G. A.
• Is Part Of: Ferroelectrics. Volume 559(2020)
• Page Start: 77
• Page End: 82
• Publication Date: 2020-04-25
• Subjects: Phase transitions -- ferroelectrics -- antiferroelectrics -- perovskite structure -- quasielastic model -- interatomic bond strain; Ferroelectricity -- Periodicals; Ferroelectric crystals -- Periodicals; 537
• DOI: 10.1080/00150193.2020.1722008
• Languages: English
• ISSNs: 0015-0193

Abstract

Abstract: Some correlations between interatomic bond A–O strain and ferroelectric or antiferroelectric phase transition Curie temperature TC have been revealed for complex perovskite structure oxides (PSO) with composition of A B O 3 and A B β 1 1 B β 2 2 O 3 types using perovskite structure quasi-elastic model. It has been established that both binary and ternary PSO have similar tendency for T C change with increasing interatomic bond A–O strain: first, T C increases and then decreases. At a certain δ A − O value, T C of binary PSO has a maximum for both ferroelectric and antiferroelectric binary perovskites. Nevertheless, for ternary ferroelectrics such maximum is not observed.