Abstract
A new niobate crystal Ba4Na2VNb9O30 was synthesized in BaO−Na2O−V2O5−Nb2O5 system for the first time. Its shape, optical properties, melting point and chemical stability wer estudied. X-ray powder diffraction study determined that this compound assumes a tetragonal tungsten bronze structure with space group P4 bm (100) and lattice parameters a=b=12.4275(2), c=3.970(3). The new compound may be one kinds of photorefractive crystals.
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Zhang Gao-ke : Born in 1965.
The work was supported by the Excellent Youth Foundation of Wuhan Science and Technology Commission (20005004035).
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Gao-ke, Z., Jin-dong, W., Shi-xi, O. et al. Synthesis and X-ray powder diffraction characterization of a new niobate crystal Ba4Na2VNb9O30 . J. Wuhan Univ. Technol.-Mat. Sci. Edit. 17, 33–34 (2002). https://doi.org/10.1007/BF02852630
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DOI: https://doi.org/10.1007/BF02852630