Synthesis and characterization of magnetic properties of nanocrystalline perovskite-type La1-xEuxFeO3 (0 ≤ x ≤ 0.5)
Abstract
Perovskite ABO3 are kinds of materials caring many interesting electric and magnetic properties; specially their properties can change dramatically by doping with rare-earth metals. In this paper, nanocrystalline La1-xEuxFeO3 (0 ≤ x ≤ 0.5) was prepared by sol-gel method. The research on the structure by X-ray diffraction (XRD) analysis and Scanning Electron Microscope (SEM) shows that the structure of crystal changes from cubic to orthorhombic when x > 0.3. Average size of particles equals 19nm and decreases with the increasing of Eu doped. The study on magnetic properties shows that these materials are weak ferromagnetism closing to superparamagnetism. The ratio of magnetic remanence and saturation Mr/Ms is nearly equal to zero. Magnetic properties of materials varying with the increasing of unit volume proves that magnetic properties depend on crystal distortion of materialsReferences
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