Synthesis of polycrystalline materials of SrWO4 and growth of its single crystal

Abstract

The polycrystalline materials of SrWO₄ were synthesized by means of a solid phase reaction with analytical purity SrCO₃ and WO₃ at high temperature. The transparent SrWO₄ single crystal with dimension of φ 22 mm×40 mm has been successfully grown along a-axis by Czochralski method. X-ray powder diffraction results show that the as-grown SrWO₄ single crystal belongs to tetragonal system and I4₁/a space group. The measured density of SrWO₄ is 6.439 g•cm^-3 by buoyancy method. The effective segregation coefficients of W and Sr elements in SrWO₄ single crystal are close to 1 by the X-ray fluorescence method.