The Effect of Chromium Ion Addition on Phase Analysis, Microstructure and Magnetic Properties of Strontium Hexaferrite Bodies Prepared by Solid State Synthesis

Strontium Hexaferrite Bodies attracted more attention in various industries such as: microwave, Dc motors, agriculture (irrigation) and etc. In this research, the effect of chromium ion addition on phase analysis, microstructure and magnetic propertiesof strontium hexaferrite bodies prepared by solid state synthesis have been investigated. Results show that not only molar ratio of iron oxide and strontium oxide(n = 6) but also first firing temperature(1210oC) to form magnetic phase of strontium hexaferrite andsecond firing temperature (1220oC) to obtain suitable magnetic properties of strontium hexaferrite bodies at presences of chromium must be considered. XRD and SEM investigations showed that optimum amount of chromium is 0/3 (SrCr0/3Fe11/7O19).Magnetic coercivity, remanent magnetization and rectangularity ratio (Hk/HCj) of sample were 3995 Oe, 3719 Gs and 83/5%, respectively.