化学共沉淀法制备NiCuZn铁氧体微粉及其磁性能

Preparation and magnetic properties of NiCuZn ferrite powders via co-precipitation method

采用预烧氧化法(化学共沉淀法制备的前驱体在高温下预烧)制备了NiCuZn铁氧体微粉。结果表明,预烧氧化法制备的NiCuZn铁氧体微粉平均晶粒尺寸约为44.1nm。随着预烧温度升高,样品D50增大。当预烧温度为850℃时,平均颗粒尺寸为2μm左右,比饱和磁化强度为62A.m2/kg,起始磁导率约为90,损耗也较小,截止频率为59MHz。

NiCuZn ferrite powder was prepared by pre burn oxidation method （precursor which be prepared by chemical co-precipitation pre-burns at high temperature）. The results show that the average particle size of NiCuZn ferrite powder prepared by pre-burn oxidation method was about 44. lnm. As the presintering temperature increases, D50 of the sample increased. When the pre-firing temperature was at 850℃, the average particle size was about 2μm and the proportional saturation magnetization was 62A·m2/kg for the largest, the initial permeability and cut-off frequency were about 90, 59MHz respectively and the deterioration was also low.