The structure, chemistry and magnetic properties of FePbBiO sub(4)

The structure, chemistry and magnetic properties of FePbBiO sub(4)

The compound FePbBiO sub(4) has been synthesised and has a tetragonal structure (P4 sub(2)/mbc, a= 8.48924(9) Aa, c= 6.10597(8) Aa) that is closely related to FeSb sub(2)O sub(4). It provides the first example of a compound with this structure that (a) contains only trivalent ions (here Fe super(3+)...

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Veröffentlicht in:Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2016-06, Vol.4 (23), p.5320-5325
Hauptverfasser: de Laune, Benjamin P, Berry, Frank J, Marco, Jose F, Horswell, Sarah L, Greaves, Colin
Format: Artikel
Sprache:eng
Schlagworte:
Antiferromagnetism
Cations
Channels
Magnetic properties
Neutron diffraction
Oxides
Trivalent ions
Walls
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Zusammenfassung:The compound FePbBiO sub(4) has been synthesised and has a tetragonal structure (P4 sub(2)/mbc, a= 8.48924(9) Aa, c= 6.10597(8) Aa) that is closely related to FeSb sub(2)O sub(4). It provides the first example of a compound with this structure that (a) contains only trivalent ions (here Fe super(3+)) within the chains of edge-linked octahedra and (b) accommodates Bi super(3+) in the walls of the channels formed between the chains of octahedra. FePbBiO sub(4) orders antiferromagnetically with a Neel temperature of 24 K; neutron diffraction reveals A-type magnetic order with moments oriented perpendicular to [001]. The magnetic moment of Fe super(3+) at 4 K is 3.74(6) mu sub(B), slightly lower than that commonly observed for this cation in well-ordered magnetic oxides.
ISSN:2050-7526
2050-7534
DOI:10.1039/c6tc01034b