... properties of this ferrite chip are determined by chemical composition, porosity, grain size and micro structure. 2, NiZn cores offer better ... miniaturization prospects, for its high electric resistance exceeding 10 Ohm-m, so that NiZn ferrite core is ... 3, The series of NiZn ferrite core is including DR core, RI core, DRWW core, RWW cores, RID core, RHH core, R4H ...