【摘要】 采用微波法在不加表面活性剂的条件下合成碳纳米管负载组成可控的Co1-xNix/MWCNTs(x=0.2、0.5、0.6、0.8)纳米复合材料,通过XRD、TEM、SAED和EDX等技术进行表征,用VSM测试了样品的磁性。结果表明,Co1-xNix纳米粒子均匀地负载在碳纳米管表面;当x=0.2、0.5、0.6、0.8时,Co1-xNix合金均为面心立方结构;其磁性能与合金的组成密切相关,随着合金中Co含量的增加,矫顽力(Hc)和饱和磁化强度(Ms)均是先增大后减小;当x=0.5时,Co0.5Ni0.5/MWCNTs的Hc和Ms均达到最大值。更多还原

【Abstract】 Co1-xNix/MWCNTs(x=0.2,0.5,0.6,0.8) nanocomposites with controllable composition were fabricated using microwave synthesis method.The samples were characterized by XRD,TEM,SAED,EDX spectroscopy and VSM.The results show that Co1-xNix alloy nanoparticles attached on MWCNTs are dispersed uniformly.When x=0.2,0.5,0.6 and 0.8,Co1-xNix alloy are all fcc structure.The magnetic properties of Co1-xNix/MWCNTs nanocomposites vary with alloy composition.Both Hc and Ms increase firstly and then decrease with increasing Co content.When x=0.5,both Hc and Ms of Co1-xNix /MWCNTs nanocomposites reach to the maximum.更多还原