Authors : 1R. Patel , 2P. S. Sawadh,
Page Nos : 1013-1020
Description :
Multiferroic BiFeO3 and BiFe1-x(Co,Ni)xO3 materials were synthesized by auto-combustion method using urea as a fuel. The crystal structure study was carried out using X-ray diffraction (XRD). All synthesized samples crystallized in a rhombohedrally distorted BiFeO3 structure. With the increase in Ni doping concentration there is an increase in lattice parameters of the unit cell. However, the lattice parameters for Co doped samples are smaller than those for BiFeO3 , which is due to the smaller ion diameter of Co3+ than that of Fe3+. Room temperature magnetic study showed that in pure BiFeO3, the magnetization varies nearly linearly with the applied magnetic field confirming that sample is antiferromagnetic having a G-type magnetic structure. Compared with BiFeO3 , the magnetic properties of doped samples were significantly enhanced.
