SmCo5纳米粒子是重要的双金属稀土磁性材料.用四步制备了SmCo5纳米粒子.调节SmCl3和CoCl2混合溶液的pH至合适值后,加热回流,使得Sm3+和Co2+水解共沉淀.150℃下水热反应,制得粒径约为20 nm的立方钐钴氧化物纳米粒子.最后,将水热制备的纳米氧化物在400℃氢气流中,以金属钠为还原剂,制得SmCo5纳米粒子.300K纳米粒子呈超顺磁状态,而5K时粒子呈铁磁状态,矫顽力为4.16×104 A/m.
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