Abstract
The polycrystalline powders of Pr1-xCaxCrO3 (x = 0, 0.02, 0.05) were prepared using solid state synthesis method. Lab source powder X-ray diffraction technique and Rietveld refinement are used for structural phase identification. The synthesized compounds are found to possess an orthorhombic structure with Pbnm space group. The substitution of Ca at Pr site does not affect the crystal structure but slight shrinkage in the lattice parameters and unit cell volume is observed. The optical properties are studied using diffuse reflectance spectroscopy technique. The energy band gap is observed to decrease from 3.20 eV (for PrCrO3) to 2.39 eV (for Pr0.95Ca0.05CrO3).
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