Analysis of Magnetic Properties of Substituted Li Ferrites

Substituted Li ferrites with chemical composition Li 0.5+0.5 t -0.5 x Fe 2.5-1.5 t -0.5 x Ti t Zn x O 4 , where x = 0.20 and t = 0.35, 0.45, 0.55 with additions of 0.005 Bi 2 O 3 and 0.05 MnO 2 were synthesized by ceramic method and from solutions of metallic salts and citric acid. The intrinsic and extrinsic magnetic properties were measured and are discussed from the point of view of the substituting element content as well as the grain size. The magnetic polarization, Curie temperature, saturation induction, susceptibility, and coercivity were measured and the Mossbauer spectra of certain samples have been analyzed. According to the requirements in specific applications, the properties of LiZnTi ferrite can be improved by means of proper substitution of selected ions and processing technology.