Structural and morphological characterization of flux grown YTa{sub 7}O{sub 19}, Nd:YTa{sub 7}O{sub 19}, Nd:LaTa{sub 7}O{sub 19} and NdTa{sub 7}O{sub 19} crystals
- Department of Crystallography and Crystallochemistry, Geological Faculty, Moscow State University, 119992/GSP-2 Moscow (Russian Federation)
- Dipartimento di Chimica Generale ed Inorganica, Chimica Analitica e Chimica Fisica, Universita di Parma, viale G.P. Usberti 17/a, 43100 Parma (Italy)
YTa{sub 7}O{sub 19} (YHT), Nd:YTa{sub 7}O{sub 19} (Nd:YHT), Nd:LaTa{sub 7}O{sub 19} (Nd:LHT) and NdTa{sub 7}O{sub 19} (NHT) single crystals have been grown by spontaneous nucleation from high-temperature solutions using K{sub 2}Mo{sub 3}O{sub 10}-B{sub 2}O{sub 3} 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 Nd{sup 3+} 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.
- OSTI ID:
- 21199772
- Journal Information:
- Materials Research Bulletin, Vol. 44, Issue 5; Other Information: DOI: 10.1016/j.materresbull.2008.10.008; PII: S0025-5408(08)00360-7; Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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