Influence of Nd +3 and Dy +3 Ions CO -Doped on Structural and Microstructural and Magnetic Properties of Bismuth Ferrite Nanoparticles

In this work Bi0.6Dy0.4-xNdxFeO3 x 0.0, 0.1, 0.2, 0.3 and 0.4 nanoparticles have been prepared and synthesized by sol-gel method. The structural, microstructural and magnetic peroperties of these nanoparticles were measured by X-ray diffraction XRD, field emission scanning electron microscopy FE-SEM and vibrating sample magnetometer VSM at room temperature. The analysis of X-ray diffraction patterns of nonoparticles show that a phase transition occurs from rhombohedral with R3c space group to orthorhombic with pnma space group. Substitution of Dy and Nd ions in Bi site reduces the lattice parameters, the unit cell volume and the nanocrystalline size of all compounds. FE-SEM images also show a decrease in particle size. The magnetic hystersis loop of the samples represent improvement in the magnetic properties of nanoparticles and a ferromagnetic behavior. The highest saturation magnetization occurs in sample for x0.1 with a value of 2.9509 emu/gr.