Bi(2)CoO(2)F(4)—A Polar, Ferrimagnetic Aurivillius Oxide-Fluoride

[Image: see text] Aurivillius oxides have been a research focus due to their ferroelectric properties, but by replacing oxide ions by fluoride, divalent magnetic cations can be introduced, giving Bi(2)MO(2)F(4) (M = Fe, Co, and Ni). Our combined experimental and computational study on Bi(2)CoO(2)F(4...

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Detalles Bibliográficos
Autores principales: Scott, Euan A. S., Mitoudi Vagourdi, Eleni, Johnsson, Mats, Cascos, Vanessa, John, Filbin, Pickup, Dave, Chadwick, Alan V., Djani, Hania, Bousquet, Eric, Zhang, Weiguo, Halasyamani, P. Shiv, McCabe, Emma E.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2022
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9648175/
https://www.ncbi.nlm.nih.gov/pubmed/36397835
http://dx.doi.org/10.1021/acs.chemmater.2c02745
Descripción
Sumario:[Image: see text] Aurivillius oxides have been a research focus due to their ferroelectric properties, but by replacing oxide ions by fluoride, divalent magnetic cations can be introduced, giving Bi(2)MO(2)F(4) (M = Fe, Co, and Ni). Our combined experimental and computational study on Bi(2)CoO(2)F(4) indicates a low-temperature polar structure of P2(1)ab symmetry (analogous to ferroelectric Bi(2)WO(6)) and a ferrimagnetic ground state. These results highlight the potential of Aurivillius oxide-fluorides for multiferroic properties. Our research has also revealed some challenges associated with the reduced tendency for polar displacements in the more ionic fluoride-based systems.

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