|About this Abstract
||Materials Science & Technology 2011
||MS&T'11 Poster Session
||105 Effect of Fluorine Incorporation on the Structures and Magnetic Properties of Perovskite and Ruddlesden Popper Ferrates
||Peter Slater, Cathryn Hancock, Frank Berry
|On-Site Speaker (Planned)
Fluorination of Sr3Fe2O7-x and (Sr/Ba)FeO3-x by heat treatment with polyvinylidine fluoride (PVDF) gives a range of novel oxide fluoride compounds, which have been analysed by X-ray diffraction and 57Fe Mössbauer spectroscopy. For the perovskite systems, the fluorination leads to complete filling of the anion sites, the reduction of Fe to Fe3+ and the appearance of magnetic ordering. For Sr3Fe2O7-x, fluorine incorporation leads to a very large expansion in the unit cell volume due to occupancy of interstitial sites within the structure. The O/F distribution in each system will be discussed in detail.