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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. shu

Influence of n(Water)/n(Surfactant) Ratio on the Composite Ni-Fe Magnetic Nanoparticles Prepared by Microemulsion Method

1.
a Department of Chemistry, Zunyi Normal College, Zunyi;
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b Department of Chemistry, Guizhou University, Guiyang 550025;
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c Department of Biochemistry, Guiyang Higher Normal School, Guiyang

Corresponding author: ZHANG Chao-Ping,
Received Date: 17 June 2002
Available Online: 11 December 2002
Fund Project: 贵州省科学基金[2001(3028)] (3028)贵阳市科技开发基金(2001)资助项目 (2001)

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).
- Ni-Fe composite nanoparticle,
- preparation,
- microemulsion,
- magnetic parameter
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