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Local-electrostatics-induced oxygen octahedral distortion in perovskite oxides and insight into the structure of Ruddlesden–Popper phases by Youngjae Hong; Pilgyu Byeon; Jumi Bak; Yoon Heo; Hye-Sung Kim; Hyung Bin Bae; Sung-Yoon Chung is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.
What is Local-electrostatics-induced oxygen octahedral distortion in perovskite oxides and insight into the structure of Ruddlesden–Popper phases about?
## Abstract As the physical properties of ABX~3~ perovskite-based oxides strongly depend on the geometry of oxygen octahedra containing transition-metal cations, precise identification of the distortion, tilt, and rotation of the octahedra is an essential step toward understanding the structure–property correlation. Here we discover an important electrostatic origin responsible for remarkable Jahn–Teller-type tetragonal distortion of oxygen octahedra during atomic-level direct observation of two-dimensional [AX] interleaved shear faults in five different perovskite-type materials, SrTiO~3~, BaCeO~3~, LaCoO~3~, LaNiO~3~, and CsPbBr~3~. When the [AX] sublayer has a net charge, for example [LaO]^+^ in LaCoO~3~ and LaNiO~3~, substantial tetragonal elongation of oxygen octahedra at the fault plane is observed and this screens the strong repulsion between the consecutive [LaO]^+^ layers. Moreover, our findings on the distortion induced by local charge are identified to be a general structural feature in lanthanide-based A~n + 1~B~n~X~3n + 1~-type Ruddlesden–Popper (RP) oxides with charged [LnO]^+^ (Ln = La, Pr, Nd, Eu, and Gd) sublayers, among more than 80 RP oxides and halides with high
Who reads Local-electrostatics-induced oxygen octahedral distortion in perovskite oxides and insight into the structure of Ruddlesden–Popper phases?
It is typically read by researchers, students, and practitioners in Biochemistry, Genetics and Molecular Biology.
- Author
- Youngjae Hong; Pilgyu Byeon; Jumi Bak; Yoon Heo; Hye-Sung Kim; Hyung Bin Bae; Sung-Yoon Chung
- Publisher
- Springer Science and Business Media LLC
- Published
- 2021
- Language
- EN
- Field
- Biochemistry, Genetics and Molecular Biology (Life Sciences)