Structural and morphological characterization of flux grown YTa7O19, Nd:YTa7O19, Nd:LaTa7O19 and NdTa7O19 crystals |
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| Authors: | E. Cavalli E. Volkova N. Leonyuk |
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| Affiliation: | a Dipartimento di Chimica Generale ed Inorganica, Chimica Analitica e Chimica Fisica, Università di Parma, viale G.P. Usberti 17/a, 43100 Parma, Italy
b Department of Crystallography & Crystallochemistry, Geological Faculty, Moscow State University, 119992/GSP-2 Moscow, Russia |
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| Abstract: | YTa7O19 (YHT), Nd:YTa7O19 (Nd:YHT), Nd:LaTa7O19 (Nd:LHT) and NdTa7O19 (NHT) single crystals have been grown by spontaneous nucleation from high-temperature solutions using K2Mo3O10-B2O3 as a flux and structurally characterized by X-ray diffraction techniques. The effect of the flux composition on the crystal morphology is discussed. The distribution of the Nd3+ ions in doped crystals has been investigated by electron microprobe analysis, evidencing non-uniform segregation coefficients. The Raman spectra of the investigated compounds are presented, and a reinterpretation of the fine structure present in the optical spectra is proposed in the light of the crystallographic information. |
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| Keywords: | 61.66.F 81.10.Dn |
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