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Polycrystalline RFeO 3 (R=La, Pr, and Sm) ceramics have been synthesized by a modified Pechini method. All the refined X-ray diffraction patterns reveal that the materials crystallized in orthorhombic structure with space group Pbnm. Clear grain and grain boundary are evident in PrFeO 3 and SmFeO 3 ceramics after sintering at 1200°C for 4h by scanning electron microscopy. Mixed...
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