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

被引：47

作者：

Clemens, Oliver ^{[1
]}

Haberkorn, Robert ^{[1
]}

Slater, Peter R. ^{[2
]}

Beck, Horst Philipp ^{[1
]}

机构：

[1] Univ Saarland, Inst Anorgan & Analyt Chem & Radiochem, D-66123 Saarbrucken, Germany

[2] Univ Birmingham, Sch Chem, Birmingham B15 2TT, W Midlands, England

来源：

SOLID STATE SCIENCES | 2010年 / 12卷 / 08期

关键词：

Oxyfluoride; Perovskite; SrFeO3-delta; BaFeO3-delta; HIGH-TEMPERATURE; MOSSBAUER-SPECTROSCOPY; STRONTIUM FERRITE; OXIDE FLUORIDES; BAFEO3-Y SYSTEM; X-RAY; PEROVSKITE; SRFEO3-DELTA; NONSTOICHIOMETRY; DIFFRACTION;

D O I：

10.1016/j.solidstatesciences.2010.06.002

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

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.

引用

页码：1455 / 1463

页数：9

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