利用化学共沉淀法制备了细小均匀的NiCuZn铁氧体前驱体粉体,通过XRD、TG-DSC、激光粒度仪(LPS)、精密阻抗分析仪、振动样品磁强计(VSM)等手段对粉体进行表征.研究前驱体的粒度分布及晶化过程,在不同的预烧温度下样品的磁性能,不同烧结温度的相结构、磁滞回线和磁性能.结果表明:前驱体粒度分布均匀,烧结后可以得到纯相的尖晶石型NiCuZn铁氧体.当预烧温度为500℃,烧结温度为900℃时,样品磁导率μi约为200,品质因数Q约为150,截止频率约为70 MHz.
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