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We have synthesized the vacancy manganites La0.77Mg0.23-x□xMnO3 powders, with x = 0, 0.05, 0.1, 0.15 and 0.2 by the solid state reaction method. X-ray diffraction analysis using Rietveld refinement has proven that all the compounds under investigation crystallize in the orthorhombic structure with Pnma space group. The result of Rietveld refinements shows that the magnesium vacancies modify the structural...
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