微波辅助polyol法制备纳米金属镍及磁性研究

功能材料, 2008, 39(4): 553-556.

微波辅助polyol法制备纳米金属镍及磁性研究

徐小兵 ^1, , 刘先松 ^2, , ^3, , ^4, , ^5,

1.安徽大学,物理与材料学院,光电信息获取与控制教育部重点实验室,安徽,合肥,230039

2.安徽大学,物理与材料学院,光电信息获取与控制教育部重点实验室,安徽,合肥,230039

3.The Physics Department and the Minerva Center, Bar-Ilan University, Ramat Gan 52900, Israel

4.The Physics Department and the Minerva Center, Bar-Ilan University, Ramat Gan 52900, Israel

5.Department of Chemistry, Bar-Ilan University, Ramat-Gan 52900, Israel

基金项目: 国家自然科学基金(50672001)

关键词：单分散Ni球 , 微波辅助polyol还原法 , 磁性

Study on nano-metalic nickel synthesized by microwave-assisted polyol method and its magnetic properties

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.

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