Preparation and electromagnetic properties of ferrite-cordierite composites

A series of novel composites consisting of NiCuZn ferrite and cordierite cr ystallites was prepared by sintering mixtures of NiCuZn ferrite nanosized p articles and MgO-Al2O3-SiO2 (MAS) glass powder. X-ray diffraction (XRD) res ults revealed that cordierite glass particles crystallize during sintering, resulting in the coexistence of NiCuZn ferrite with cordierite crystal pha se in as-sintered composites. The resulting composites have tunable electro magnetic properties with high resonance frequencies, which may be used for multilayer chip inductors (MLCIs). (C) 2000 Elsevier Science B.V. All right s reserved.