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Single Crystal Growth of Lanthanum(III) Molybdate(VI) (La<sub>4</sub>Mo<sub>7</sub>O<sub>27</sub>) Using H<sub>3</sub>BO<sub>3</sub> Flux
Crystal Research Laboratory, Department of Physics, Anna University, Chennai, India.
Crystal Research Laboratory, Department of Physics, Anna University, Chennai, India.
Crystal Research Laboratory, Department of Physics, Anna University, Chennai, India.
- 1 Crystal Research Laboratory, Department of Physics, Anna University, Chennai, India.
- 2 Crystal Research Laboratory, Department of Physics, Anna University, Chennai, India.
- 3 Crystal Research Laboratory, Department of Physics, Anna University, Chennai, India.
Journal of Crystallization Process and Technology·Volume 04 (2014)·Pages 39–45·Published 2 January 2014·DOI10.4236/jcpt.2014.41006
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Abstract
Single crystals of La 4 Mo 7 O 27 have been successfully grown by the flux growth method H 3 BO 3 as the fl ux in a plantium crucible using the starting materials of La 2 O 3 , H 3 BO 3 and MoO 3 in a molar ratio of 0.16:0.16:0.68, in which H 3 BO 3 acted as a flux. Transparent colorless crystals were obtained with size of 0.8 × 0.3 × 0.2 mm 3 under the optimized crystal growth conditions : growth temperature of 727°C, growth time of 95 h and cooling rate of 0.5°C/hr. A well-developed morphology of the crystals was observed and analyzed. The preparation process of starting materials on crystal growth was investigated. The grown crystals were characterized by powder X-ray diffraction (PXRD), EDAX, SEM, UV-Vis, photoluminescen c e studies, thermal analysis, dielectric studies and second harmonic generation (SHG). The results are presented and discussed.
KeywordsFlux GrowthPowder X-Ray DiffractionLa<sub>4</sub>Mo<sub>7</sub>O<sub>27</sub>Thermal AnalysisOptical PropertiesSecond Harmonic Generation (SHG)
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