Abstract: Disclosed in this invention is a magnetic material comprising the main components consisting of 14.0 to 19.0 mol. % of NiO, 29.0 to 35.0 mol. % of ZnO, 3.0 to 6.0 % by weight of CuO, and the remainder Fe.sub.2 O3; the sub-components consisting of less than 0.02% by weight of SiO.sub.2 (not including 0%), less than 0.02% by weight of CaO (not including 0%), and less than 0.1% by weight of Bi.sub.2 O.sub.3 (not including 0%), and the additives consisting of 0.1 to 0.3% by weight of MgO and 0.1 to 0.4% by weight of MnO. The material is provided with good physical characteristics of low magnetic loss, high initial permeability, and high strength.