采用微波辅助polyol法成功地制备了直径范围在5~10nm、100~180nm的单分散Ni球,对其磁性进行了测量分析。用XRD和EDAX,接着用TEM和MFM分别对制备的样品进行测试,并用VSM和SQUID进一步讨论了铁磁/反铁磁的界面耦合效应。XRD显示该样品是面心立方结构,EDAX数据表明制备过程中镍球被轻微氧化,MFM和TEM观察结果显示样品金属镍是比较理想的球型,VSM测试结果表明Ni纳米球具有典型的铁磁性。 The monodisperse Ni spheres with diameter in the range of 5 ~ 10nm and 100 ~ 180nm were successfully prepared by microwave assisted polyol method, and the magnetic properties were measured and analyzed. The prepared samples were tested respectively by XRD and EDAX, followed by TEM and MFM, and the ferromagnetic / antiferromagnetic interface coupling effects were further discussed using VSM and SQUID. XRD showed that the sample was face-centered cubic structure. EDAX data showed that the nickel ball was slightly oxidized during the preparation. MFM and TEM observations showed that the sample nickel was an ideal ball. The VSM test results show that the Ni nanosphere has the typical ferromagnetism .