Ferrite materials are unique because they are one of a few classes of insulating magnetic oxides that possess moderate values of magnetization, high permeability, moderate to high permittivity, and low-losses at frequencies from dc to sub-millimeter wavelengths. These properties afford them great value in high frequency devices that require strong coupling to electromagnetic signals while experiencing low losses. Additionally, due to their intrinsic magnetism, these materials also provide non-reciprocal behavior that is essential for many device applications in radar and communications systems as isolators, circulators, etc. To achieve some of these goals we have made an attempt produce NiCo ferrites doped with lanthanum materials with conventional SGMC method.