本文以二茂铁为主要原料,通过溶剂热法在190℃反应72h制备了核壳型Fe3O4/C磁性纳米颗粒.通过X-射线衍射仪(XRD)、扫描电子显微镜(SEM)、X-射线能谱仪(EDS)、透射电子显微镜(TEM)、振动样品磁强计(VSM)、矢量网络分析仪对产物进行了表征.结果表明,产物为球形核壳结构的Fe3 O4/C纳米颗粒,其尺寸在100～150nm之间,其中碳壳的厚度在10～20nm之间.室温下,产物的矫顽力(Hc)为13.635Oe,剩余磁化率(Mr)为5.00725emu/g,饱和磁化率(Ms)为17.6863emu/g.在2～18GHz范围内,产物厚度为5mm、频率为12.99GHz时,产物的微波反射率为-37.85dB.
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