Structure and magnetic order in oxygen-excess Schafarzikite (AB2O4) phases
We are exploring the potential of the scahfarzikite mineral structure (eg FeSb2O4) to support functionalization to provide useful properties. This programme has revealed for the first time that the channels in the structure can act as hosts for interstitial oxygen, with associated oxidation of transition metal ions present. Oxidation occurs at low temperatures such that possible applications as energy materials may be possible. It is ckear from mass changes that the oxygen does not simply enter as oxide, O2-, ions but also as catenated species such as peroxide. The proposed experiment aims to explore fully the structural and magnetic properties of a range of oxygen-excess phases. We will establish the nature of the interstitial oxygen species and determine how this may change with oxygen content. We will also explore details of the magnetic order and how this changes as a function of temperature.
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GREAVES Colin; DE LAUNE Benjamin; HORSWELL Sarah and SUARD Emmanuelle. (2014). Structure and magnetic order in oxygen-excess Schafarzikite (AB2O4) phases. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-31-2338
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