The investigations of phases with general formula M2FeV3O11, where M=Mg,Co, Ni,Zn by IR and Mössbauer spectroscopy期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

The investigations of phases with general formula M2FeV3O11, where M=Mg,Co, Ni,Zn by IR and Mössbauer spectroscopy

Affiliation:	1. Department of Inorganic and Analytical Chemistry, Szczecin University of Technology, Al. Piastow 42, 71-065 Szczecin, Poland;2. Laboratory of Nuclear Chemistry Eötvös Loránd University, Budapest 1518, P.O. Box 32, Hungary;3. MTA-ELTE Research Group for Nuclear Methods in Structural Chemistry, Eötvös Loránd University, Budapest 1518, P.O. Box 32, Hungary

Abstract:	Phases of general formula M₂FeV₃O₁₁, where M=Mg, Co, Ni and Zn as well as the orthorhombic modification of FeNb₁₁O₂₉, have been investigated by the help of IR and Mössbauer spectroscopy. It was found that the isostructural compounds Co₂FeV₃O₁₁, Mg₂FeV₃O₁₁, Zn₂FeV₃O₁₁, as well as Ni₂FeV₃O₁₁ with a different structure have one single and almost identical chemical environment for iron(III). The large Mössbauer quadrupole splitting measured suggests that iron(III) is located in a highly distorted octahedron. The IR spectra of three isostructural M₂FeV₃O₁₁ compounds are similar but differ from that of Ni₂FeV₃O₁₁. The Mössbauer spectrum of orthorhombic FeNb₁₁O₂₉ has been fitted with two doublets, their hyperfine parameters indicating iron in distorted octahedral environment.

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