Citation:
LI Hua-Gang, ZHANG Chao-Ping, LUO Yu-Ping, GAO Xiang, SHEN De-Jun. Influence of n(Water)/n(Surfactant) Ratio on the Composite Ni-Fe Magnetic Nanoparticles Prepared by Microemulsion Method[J]. Chinese Journal of Applied Chemistry,
;2003, 20(3): 233-237.
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The influence of water-to-surfactant-ratio R on the composition and size distribution of the Ni-Fe composite nanoparticles prepared by a microemulsion method has been investigated. The results showed that the size and composition of nanoparticles would change with R value. When R<18 the Ni-Fe alloy would be obtained. It was found that the coereivity values of composite Ni-Fe particles were reduced with Ni-Fe particle size. The Ni-Fe nanoparticles had specific saturation magnetization intensity of 50.02×10-3~217.68×10-3 A/(m·g); coerevity values of 2.388~10.030 kA/m; and remanent magnetism of 28.28×10-3~37.7×10-3 A/(m·g).
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