Lutetium pyrosilicate single crystals Lu2Si2O7 were grown by a floating‐zone technique associated with an arc image furnace. The compound is monoclinic, space group C2/m, Z = 2, a = 6.7665 (14), b = 8.8407 (18), c = 4.7195 (27) Å and β = 101.95 (3)°. Indexed X‐ray powder data at 294 K are given.
Single crystals of ytterbium, lutetium and scandium pyrosilicates were grown by a floating zone technique associated with an arc image furnace. The recorded infrared and Raman spectra allow complete attribution of internal and external modes, in good agreement with group theory predictions.
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