Magnetic structure and properties of the rechargeable battery insertion compound Na2FePO4F
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Date
2013-12-26
Journal Title
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Volume Title
Publisher
American Chemical Society
Abstract
The magnetic structure and properties of sodium iron fluorophosphate Na2FePO4F (space group Pbcn), a cathode material for rechargeable batteries, were studied using magnetometry and neutron powder diffraction. The material, which can be described as a quasi-layered structure with zigzag Fe-octahedral chains, develops a long-range antiferromagnetic order below ∼3.4 K. The magnetic structure is rationalized as a super-exchange-driven ferromagnetic ordering of chains running along the a-axis, coupled antiferromagnetically by super-super-exchange via phosphate groups along the c-axis, with ordering along the b-axis likely due to the contribution of dipole–dipole interactions. © 2013 American Chemical Society
Description
Keywords
Neutron diffraction, Magnetic properties, Cathodes, Crystal structure, Antiferromagnetism, Ferromagnetism, Radioisotope batteries, Phosphates
Citation
Avdeev, M., Ling, C. D., Tan, T. T., Li, S., Oyama, G., Yamada, A., & Barpanda, P. (2014) Magnetic structure and properties of the rechargeable battery insertion compound Na2FePO4F. Inorganic Chemistry, 53(2), 682–684. doi:10.1021/ic402513d