Magnetic Structure and Properties of the Rechargeable Battery Insertion Compound Na2FePO4F | Zendy

Maxim Avdeev | Zendy; Chris D. Ling | Zendy; Thiam Teck Tan | Zendy; Sean Li | Zendy; Gosuke Oyama | Zendy; Atsuo Yamada | Zendy; Prabeer Barpanda | Zendy

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Magnetic Structure and Properties of the Rechargeable Battery Insertion Compound Na₂FePO₄F

Author(s) -

Maxim Avdeev,

Chris D. Ling,

Thiam Teck Tan,

Sean Li,

Gosuke Oyama,

Atsuo Yamada,

Prabeer Barpanda

Publication year - 2013

Publication title -

inorganic chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.348

H-Index - 233

eISSN - 1520-510X

pISSN - 0020-1669

DOI - 10.1021/ic402513d

Subject(s) - chemistry , antiferromagnetism , neutron diffraction , magnetic structure , crystallography , octahedron , ferromagnetism , zigzag , crystal structure , magnetometer , cathode , condensed matter physics , magnetic field , physics , geometry , magnetization , mathematics , quantum mechanics

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.

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