High-pressure Raman study of MgV2O6 synthesized at high pressure and high temperature

A new structural phase of MgV2O6 was obtained by a high-pressure, high-temperature (HPHT) synthesis method. The new phase was investigated by the Rietveld analysis of X-ray powder diffraction data, showing space group Pbcn (No. 60) symmetry and a = 13.6113(6)A (1A =0.1 nm), b = 5.5809(1)A, c = 4.856...

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Veröffentlicht in:中国物理B:英文版 2013-06 (6), p.472-474
1. Verfasser: 唐瑞莲 李岩 陶强 李娜娜 李会 韩丹丹 朱品文 王欣
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description A new structural phase of MgV2O6 was obtained by a high-pressure, high-temperature (HPHT) synthesis method. The new phase was investigated by the Rietveld analysis of X-ray powder diffraction data, showing space group Pbcn (No. 60) symmetry and a = 13.6113(6)A (1A =0.1 nm), b = 5.5809(1)A, c = 4.8566(3)A, V = 368.93(2)A3 (Z = 4). High pressure behavior was studied by Raman spectroscopy at room temperature. Under 22.5 GPa, there was no sign of a structural phase transition in the spectra, demonstrating stability of the HPHT phase up to the highest pressure.
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