Özet:

The object of research is the crystal structure of Ba3WO6 compound, which can be used in metal porous cathodes for rocket engineering, as an ionic conductor and also in solid-state lighting devices. One of the most problematic places is the availability of a variety of information on the crystal structure of this compound. So in pdf-2 database for 2004 there are seven diffraction spectra of different quality, obtained for Ba3WO6 compound synthesized by different methods. The research uses the pdf-2 database for 2004, the HiphScorePlus 3.0 program, and the generated spectrum 00-033-0182, which has a high quality of survey. The X-ray phase analysis doesn’t reveal the presence of several phases in the investigated compound, which are represented in the state diagram. So it is concluded that the compound is single-phase. It is found that the investigated spectrum belongs to the structural type Ba11W4O23. Positions Ba1 (8b), Ba2 (48f), W2 (16c), О2 (96g), О3 (96h), О4 (96g) have vacancies. Due to the existing vacancies, the stoichiometric composition of the compound from the structural type Ba11W4O23 is shifted as Ba84,46W31,07O189,08. Such vacancies provide ionic conductivity of the compound. It is found that the compound belongs to the cubic system, the space symmetry group Fd-3m, has a constant crystal lattice of 17.1690 (4) Аº. The disagreement factor is R=5.43404. The displaced stoichiometric composition can mean that this compound has a significant area of homogeneity, the boundaries of which can be the subject of further research. Author Biography Viktor Zavodyannyy, Kherson State Agriculture University, 23, Sretenskaya str., Kherson, Ukraine, 73006 PhD, Associate Professor Department of Physics and General Engineering Disciplines

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