Abstract
A fine particle of La0.7Ca0.3MnO3 was synthesized by the mechanical synthesis. The average crystallite size of 1 micrometre was obtained by both scanning electron microscopy and X-ray diffraction. The X-ray diffraction based on the Rietveld method on a powder sample show that the obtained sample crystallizes in the orthorhombic structure with the Pnma space group. Magnetic measurements showed that the sample exhibits a paramagnetic-to-ferromagnetic phase transition with decreasing temperature and the obtained Curie temperature is Tc ≈ 120 K.
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