Magnetic properties of selected substituted spinel ferrites

► The additives could improve magnetic properties of MeFe2O4 spinel ferrites. ► Changes of NiZn ferrite properties caused by Cu/Be substitution are presented. ► The same substituent Me ion have distinguishable effect for various Zn content. ► Changes of LiZn ferrite properties due to Zn/Ti substitution are also presented. ► Proper materials for obtaining higher ferromagnetic resonance frequency can be found.