Synthetic brunogeierite Fe2GeO4: XRD, Mössbauer and Raman high-pressure study

T V Setkova,A V Spivak,E Yu Borovikova,M V Voronin, E S Zakharchenko,V S Balitsky,A V Kuzmin, L V Sipavina, A V Iskrina, S S Khasanov

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy（2022）

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摘要

•Brunogeierite was synthesized at 650 °C and 100 MPa by hydrothermal method.•Single crystal structure was refined by XRD.•Mössbauer spectrum corresponds to the octahedral position of iron ions [VI]Fe2+.•Lattice dynamic calculations agree with experimental Raman data.•Brunogaierite Raman spectra are obtained as function of pressure up to 30 GPa.

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关键词

Spinel,Brunogeierite,Germanium,Germinate,Raman spectroscopy,Mössbauer spectroscopy,XRD,High pressure,Lattice dynamic calculations,Phase transition

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