摘要
采用湿化学法制备了碳纳米管负载组成可控的FexCo81-xNi19纳米复合材料,用XRD、TEM、SAED和EDX等技术进行表征,并用VSM测试样品的磁性能。结果表明,FexCo81-xNi19合金以颗粒状均匀分散在碳纳米管表面;当x=21、33、46时,FeCoNi合金均为体心立方和面心立方两相共存;其磁性能与合金的组成密切相关,随着合金中Fe含量的增加,矫顽力(Hc)下降,饱和磁化强度(Ms)显著增加;当x=46时,合金的磁性能最佳。
FexCo81-xNi19/CNTs nanocomposites with controllable composition were fabricated using wet chemistry method. The samples were characterized by XRD, TEM, SAED, EDX spectroscopy and VSM. The results show that FexCo81-xNi19 alloy nanoparticles attached on CNTs are granular and dispersed uniformly. During the composition range （x= 21,33,46）, fee and bee structure coexist obviously. The magnetic properties of FexCo81-x Ni19 alloy nanoparticles vary with alloy composition. With increasing Fe content, Hc decreases while Ms increases dramaticly. The alloys of a composition of Fe46 Co35 Ni19 own the optimal magnetic property.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2007年第11期1777-1779,共3页
Journal of Functional Materials
基金
国家自然科学基金资助项目(20271002)
安徽省自然科学资助项目(070414179)
关键词
碳纳米管
FeCoNi三元合金
磁性能
湿化学法
carbon nanotubes
FeCoNi ternary alloy
magnetic properties
wet chemistry method
