Structural and Magnetic Properties of (Ni1-xMgx) Fe2O4 Ferrites

We have studied the structural and magnetic properties of (ni1-xmgx)fe2o4 ferrite. x-ray diffraction and magnetization measurements were performed for all samples. x-ray results showed that a single phase ferrite was obtained for all samples. the lattice parameter, a, was estimated from the x-ray results and we found that the lattice parameter increases slightly at high mg^2+ contents (x > 0.4). magnetic hysteresis measured for all samples showed that the coercivity (hc) shows an appreciable change at low (x = 0.2) and high (x =1.0) mg^2+ content. it was also found that the saturation magnetization (ms) and the remanence (mr) decreases with increasing mg.