Issue Information
روزنامه با شماره پیاپی سال 2001
Pages
5
From page
471
To page
475
Abstract
Polycrystalline samples of BiTa1−xNbxO4 (0≦x≦1) were synthesized by a solid state reaction and characterized by powder X-ray diffraction. Rietveld structure refinement revealed that the variation of x in BiTa1−xNbxO4 (0≦x≦1) could cause the change in crystal structure. The structure of BiTa1−xNbxO4 (x=0.0 and 0.5) is triclinic system with space group P1. However, the structure of x=0.2, 0.8 and 1.0 is orthorhombic system with space group Pnna. Ultraviolet–visible diffuse reflectance spectroscopy measurement revealed that the band gap of triclinic compounds is wider than that of orthorhombic compounds.
Journal title
Acta Tropica
Serial Year
2001
Journal title
Acta Tropica
Record number
1746934
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