Synthesis and characterisation of the SrxBa1-xFeO3-y-system and the fluorinated phases SrxBa1-xFeO2F

O Clemens, R Haberkorn, Peter Slater, HP Beck

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Compounds in the system SrxBa1-xFeO3-y, have been prepared under different partial pressures of oxygen. In this system, different perovskite-type structures are found depending highly on the values of x and y. Fluorination using polyvinylidenedifluoride (PVDF) gives oxyfluoride materials of composition SrxBa1-xFeO2F, which normally crystallize in the cubic perovskite structure. Rietveld refinement results provide information about the packing density for oxide and oxyfluoride samples and allow a general comparison between these two different types of materials. Furthermore, the determination of the average iron oxidation state also showed that the oxygen deficiency, y, depends significantly on the value of x and the structure determined by the Sr/Ba ratio. (C) 2010 Elsevier Masson SAS. All rights reserved.
Original languageEnglish
Pages (from-to)1455-1463
Number of pages9
JournalSolid State Sciences
Volume12
Issue number8
DOIs
Publication statusPublished - 1 Aug 2010

Keywords

  • Perovskite
  • Oxyfluoride
  • SrFeO3-delta
  • BaFeO3-delta

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