Polar octahedral rotations: A path to new multifunctional materials
By N. Benedek, Andrew T. Mulder, C. Fennie. 2011
218 citations recorded by the source corpus.
Abstract Perovskite ABO3 oxides display an amazing variety of phenomena that can be altered by subtle changes in the chemistry and internal structure, making them a favorite class of materials to explore the rational design of novel properties. Here we highlight a recent advance in which rotations of the BO6 octahedra give rise to a novel form of ferroelectricity – hybrid improper ferroelectricity. Octahedral rotations also strongly influence other structural, magnetic, orbital, and electronic degrees of freedom in perovskites and related materials. Octahedral rotation-driven ferroelectricity consequently has the potential to robustly control emergent phenomena with an applied electric field. The concept of ‘functional’ octahedral rotations is introduced and the challenges for materials chemistry and the possibilities for new rotation-driven phenomena in multifunctional materials are explored.
Subfields: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/6b933f4d015a1af410d300841cd511afb6130552
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Citations in the corpus
- Multiferroic materials and magnetoelectric physics: symmetry, entanglement, excitation, and topology (2015, background): “Based on the density functional calculations, Fennie and Rabe predicted that the paraelectric antiferromagnetic EuTiO3 would become ferromagnetic and ferroelectric, given a compressive strain exceeding 1.2% [308].”