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- W2026888040 abstract "Ta2O5 ceramics and crystals were prepared and analyzed using Raman spectroscopy in the temperature range 25–873 K. The low-energy phonon bands (ν < 100 cm−1) of Ta2O5 are assigned to external modes originating from the interaction between different Ta polyhedra and TaOn5 − 2n Ta6O126+ clusters. The temperature and polarization dependence of external modes suggests the existence of clusters in the material. A softening of the low-energy bands was observed with increasing temperature. The spectral evolutions show a soft mode-derived second-order monoclinic to orthorhombic phase transition at about 600 K in Ta2O5. Copyright © 2000 John Wiley & Sons, Ltd." @default.
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- W2026888040 date "2000-01-01" @default.
- W2026888040 modified "2023-10-18" @default.
- W2026888040 title "Raman scattering study of a phase transition in tantalum pentoxide" @default.
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- W2026888040 doi "https://doi.org/10.1002/1097-4555(200012)31:12<1061::aid-jrs644>3.0.co;2-g" @default.
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