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Persistent URL http://purl.org/net/epubs/work/53375393
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Record Id 53375393
Title Bi2CoO2F4 – a polar, ferrimagnetic Aurivillius oxide-fluoride
Abstract 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 Bi2MO2F4 (M = Fe, Co, Ni). Our combined experimental and computational study on Bi2CoO2F4 indicates a low-temperature polar structure of P21ab symmetry (analogous to ferroelectric Bi2WO6) 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.
Funding Information Royal Society, International Exchange Scheme (IES\R3\170112); Leverhulme Trust (RPG-2017-362); EU Cost Action, Towards Oxide-Based Electronics; RSC, Summer Internship Scheme; ISIS Neutron and Muon Source, Beam time allocation (RB1920416); ISIS Neutron and Muon Source, Beam time allocation (RB1920421)
Related Research Object(s): 10.5286/ISIS.E.RB1920416 , 10.5286/ISIS.E.RB1920421
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Language English (EN)
Type Details URI(s) Local file(s) Year
Journal Article Chem Mater 34, no. 21 (2022): 9775-9785. doi:10.1021/acs.chemmater.2c02745 2022