Science and Education Publishing International Journal of Physics 1 1 2013 10 20 Structural and Magnetization Behaviors of Ni Substituted Li-Mg Ferrites 128 132 EN M. Mahbubur Rahman Department of Physics, Jahangirnagar University, Savar, Dhaka, Bangladesh Banalota Moonmoon Sonia Mithun Kumar Das Farid Ahmed Md. Abul Hossain D. K. Saha Shireen Akhter IJP2013156 10.12691/ijp-1-5-6 2013 09 23 2013 10 17 2013 10 20 Magnetization behaviors of Ni-substituted Li_xMg_0.5Ni_0.5-2xFe_2+xO₄ ferrites, where x = 0.25, 0.20, 0.15, 0.10 and 0.00 synthesized by standard ceramic technology sintered at 1300°C in air for 5 hours has been presented in the present study. The bulk density and lattice constants of the samples found to be decreased with the increase in the Ni-content for the x values from 0.25 to 0.00. DC electrical resistivity has found to show highest magnitude at room temperature and decreases with further increase in temperature. Magnetization of the samples has been measured as a function of the field using hysteresis loop tracer at 30°C. It was observed that addition of nickel in polycrystalline Li-Mg ferrites plays an important role in modification of structural and magnetization characteristics.