... steadily in big electric current, and magnetic properties of this ferrite chip are determined by chemical composition, porosity, grain size and micro ... exceeding 10 Ohm-m, so that NiZn ferrite core is able to be wound directly by coils. 3, The series of ... 4, Also NiZn ferrite core has long been well known due to its technological applications in high frequency inductors, transformer core, microwave ...