光谱学与光谱分析 |
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The Preparation of NiFe2O4 Composite Nanoparticles and Spectral Properties |
ZHU Huai-wu1, ZHANG Chao-ping2 |
1. Department of Chemistry, Guizhou Normal University, Guiyang 550025,China 2. Department of Chemistry, Guizhou University, Guiyang 550025,China |
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Abstract The composite nanoparticles of Ni-ferrite with coated gelatin were prepared with the gel-microemulsion chemical tailoring method. The gelatin FeCl2 and NiCl2 were used to prepare gel, which was tailored to be particles in micellar of microemulsion, and the particles were reduced, compounded and nucleated. Surveying by XRD, TEM, IR and EDS showed that the particles formed were coated by gelatin protein and their mean sizes are in the range of 10-100 nm, and particle sizes are 3.3-4.6 nm. There are about 3-22 NiFe2O4 particles on each spheroid. The measurement of magnetic parameters indicated that the specific saturation magnetization was σs=36.31×103/4π(A·m-1·g-1),coercivity was Hc=6 750 A·m-1,and residual magnetism Br=4.39×103/4π(A·m-1·g-1).
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Received: 2002-09-24
Accepted: 2003-02-12
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Corresponding Authors:
ZHANG Chao-ping
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Cite this article: |
ZHU Huai-wu,ZHANG Chao-ping. The Preparation of NiFe2O4 Composite Nanoparticles and Spectral Properties [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(01): 25-28.
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URL: |
http://www.gpxygpfx.com/EN/Y2004/V24/I01/25 |
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