Single Crystal Growth of Lanthanum(III) Molybdate(VI) (La4Mo7O27) Using H3BO3 Flux

DOI: 10.4236/jcpt.2014.41006   PDF   HTML   XML   3,364 Downloads   5,390 Views   Citations

Abstract

Single crystals of La4Mo7O27 have been successfully grown by the flux growth method H3BO3 as the flux in a plantium crucible using the starting materials of La2O3, H3BO3 and MoO3 in a molar ratio of 0.16:0.16:0.68, in which H3BO3 acted as a flux. Transparent colorless crystals were obtained with size of 0.8 × 0.3 × 0.2 mm3 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, photoluminescence studies, thermal analysis, dielectric studies and second harmonic generation (SHG). The results are presented and discussed.

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M. Rajalakshmi, R. Indirajith and R. Gopalakrishnan, "Single Crystal Growth of Lanthanum(III) Molybdate(VI) (La4Mo7O27) Using H3BO3 Flux," Journal of Crystallization Process and Technology, Vol. 4 No. 1, 2014, pp. 39-45. doi: 10.4236/jcpt.2014.41006.

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1] V. G. Dmitriev, G. G. Gurzadyan and D. N. Nicogosyan, “Handbook of Nonlinear Optical Crystals,” Springer- Verlag, New York, 1999.
http://dx.doi.org/10.1007/978-3-540-46793-9
[2] D. M. Burland, R. D. Miller and C. A. Walsh, “Second-Order Nonlinearity in Poled-Polymer Systems,” Chemical Reviews, Vol. 94, No. 1, 1994, pp. 31-75.
http://dx.doi.org/10.1021/cr00025a002
[3] C. Chen and G. Liu, “Recent Advances in Nonlinear Optical and Electro-Optical Materials,” Annual Review of Materials Science, Vol. 16, 1986, pp. 203-243.
http://dx.doi.org/10.1146/annurev.ms.16.080186.001223
[4] T. Sasaki, Y. Mori, M. Yoshimura, Y. Yap and T. Kamimura, “Recent Development of Nonlinear Optical Borate Crystals: Key Materials for Generation of Visible and UV Light,” Materials Science and Engineering: R, Vol. 30, No. 1-2, 2000, pp. 1-54.
[5] H. Naruke and T. Yamase, “Crystallization and Structural Characterization of Two Europium Molybdates, Eu4Mo7O27 and Eu6Mo10O39,” Journal of Solid State Chemistry, Vol. 161, No. 1, 2001, pp. 85-92.
http://dx.doi.org/10.1006/jssc.2001.9284
[6] H. Naruke and T. Yamase, “A Novel Phase in the Gd2O3-MoO3 System,” Acta Crystallographica, Vol. E58, 2002, pp. i62-i64.
[7] B. van der Wolf, P. Held and P. Becker, “The Lanthanum(III) Molybdate(VI) La4Mo7O27,” Acta Crystallographica, Vol. E65, 2009, p. i59.
[8] H. L. Bhat, “Growth and Characterization of Some Novel Crystals for Nonlinear Optical Applications,” Bulletin of Materials Science, Vol. 17, No. 7, 1994, pp. 1233-1249.
http://dx.doi.org/10.1007/BF02747223
[9] N. F. Mott and R. W. Gurney, “Electronic Processes in Ionic Crystals,” 2nd Edition, Oxford, London, 1940.
[10] J. Tauc, “Amorphous and Liquid Semiconductors,” Plenum, New York, 1974.
http://dx.doi.org/10.1007/BF02747223
[11] C. T. Hsieh, J. M. Chen, H. H. Lin and H. C. Shih, “Field Emission from Various CuO Nanostructures,” Applied Physics Letters, Vol. 83, No. 16, 2003, pp. 3383-3385.
http://dx.doi.org/10.1063/1.1619229
[12] P. Zu, Z. K. Tang, G. K. L. Wong, M. Kawasaki, A. Ohtomo, H. Koinuma and Y. Segawa, “Ultraviolet Spontaneous and Stimulated Emissions from ZnO Microcrystallite Thin Films at Room Temperature,” Solid State Communications, Vol. 103, No. 8, 1997, pp. 459-463.
http://dx.doi.org/10.1016/S0038-1098(97)00216-0
[13] X. Goa, X. Li and W. D. Yu, “Rapid Preparation, Characterization and Photoluminescence of ZnO Films by a Novel Chemical Method,” Materials Research Bulletin, Vol. 40, No. 7, 2005, pp. 1104-1111.
http://dx.doi.org/10.1016/S0038-1098(97)00216-0
[14] M. Cusac, “The Electrical and Magnetic Properties of Solids,” Longmans, London, 1967.
[15] J. P. Suchet, “Electrical Conduction in Solid Materials,” Pergamon, London, 1975.
[16] S. K. Kurtz and T. T. Perry, “A Powder Technique for the Evaluation of Nonlinear Optical Materials,” Journal of Applied Physics, Vol. 39, No. 8, 1968, pp. 3798-3813.
http://dx.doi.org/10.1063/1.1656857

  
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