Nanosized Ni_0.70Zn_0.25Co_0.05Fe_1.90Mn_0.02O₄ ferrite ceramics were fabricated from high-energy ball milled powder mixtures with various ratios of Fe₂O₃/Fe as starting materials, in order to achieve magneto-dielectric materials with near net shape behavior for practical applications. The ferrite ceramics were obtained by sintering the milled powder compacts at 800 °C for 4 h, with a linear expansion of less than 4% as compared to the green pellets. The ceramics had an average grain size of less than 200 nm. The real part of relative permittivity decreases with increasing percentage of Fe₂O₃ used in the starting mixtures. The sample from the powder mixture with 50% Fe₂O₃ exhibits promising magneto-dielectric properties at frequencies of up to 90 MHz, which can be used for miniaturization of antennas at very high frequency (VHF) band.

以高能球磨的粉末混合物，以不同比例的Fe ₂ O ₃ / Fe为原料，制备了纳米尺寸的Ni _0.70 Zn _0.25 Co _0.05 Fe _1.90 Mn _0.02 O ₄铁氧体陶瓷，以实现近净磁电介质。实际应用中的形状行为。铁氧体陶瓷是通过将研磨后的粉体在800°C下烧结4小时而获得的，与生料相比，其线性膨胀小于4％。陶瓷的平均粒径小于200nm。相对介电常数的实部随着Fe ₂ O ₃百分比的增加而降低用于起始混合物中。来自含50％Fe ₂ O ₃的粉末混合物的样品在高达90 MHz的频率下显示出有希望的磁介电性能，可用于超高频（VHF）频段的天线小型化。