Abstract
A new crystal Y2Mo4O15 with dimensions of 14 × 12 × 5 mm3 was successfully grown via a top-seeded solution growth (TSSG) method. The crystal structure shows that Y2Mo4O15 crystallizes in the monoclinic space group P21/c (No. 14, a = 6.8110(4) Å, b = 9.5833(6) Å, c = 10.5124(7) Å, β = 105.512(7)°, and Z = 2) with Mo4O15 and YO7 polyhedra as basic structural units. Optical transmittance spectra of the Y2Mo4O15 crystal exhibited a broad transmission range from 345 nm to 5575 nm. The group theory calculation and spontaneous Raman spectra show that the Y2Mo4O15 crystal has 63 IR-active modes (32Au + 31Bu) and 60 Raman-active modes (30Ag + 30Bg). The strongest Raman shift is located at 953 cm−1 caused by the asymmetric stretching vibrations of the Mo–O bonds. The spontaneous Raman spectra and the possibility of rare-earth doping to the Y2Mo4O15 crystal indicate the Y2Mo4O15 crystal to be a promising Raman and self-Raman crystal.
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