Abstract
The crystal structure of indium titanate (In 2TiO 5) has been refined from X-ray powder diffraction data by Rietveld refinement. In 2TiO 5 is isostructural with In 2VO 5. It crystallizes in the orthorhombic space group Pnma with a = 7.2418(7) A ̇ , b = 3.5018(3) A ̇ , c = 14.890(2) A ̇ , V = 377.6(4) A ̇ 3 and Z = 4. The final reliability factors were R p = 8.5%, R wp = 11.1% and R I = 5.6%. In 2TiO 5 shows luminescent properties below 220 K. The luminescence is discussed in terms of crystal structure and compared to that of some other luminescent titanates and indates.
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