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Synthesis and Spectroscopic Properties of Monoclinic α‑Eu2(MoO4)3

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posted on 2014-07-17, 00:00 authored by V. V. Atuchin, A. S. Aleksandrovsky, O. D. Chimitova, T. A. Gavrilova, A. S. Krylov, M. S. Molokeev, A. S. Oreshonkov, B. G. Bazarov, J. G. Bazarova
The microcrystals of monoclinic europium molybdate, α-Eu2(MoO4)3, have been fabricated by solid-state synthesis at T = 753–1273 K for 300 h. The crystal structure of α-Eu2(MoO4)3 has been refined by the Rietveld method and was found to belong to the space group C2/c with unit cell parameters a = 7.5576(1), b = 11.4709(2), c = 11.5158(2) Å, and β = 109.278(1)° (RB = 3.39%). About 40 narrow Raman lines have been observed in the Raman spectrum of the α-Eu2(MoO4)3 powder sample. The luminescence spectra of α-Eu2(MoO4)3 under excitation at 355 and 457.9 nm reveal domination of induced electric dipole transition 5D07F2 and the presence of ultranarrow lines at 5D07F0 and 5D17F0 transitions.

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