Superparamagnetism of ferrite particles dispersed in spherical polymeric materials

Superparamagnetic iron oxide particles synthesized in water-in-oil microemulsions have been incorporated into a polymer matrix. The microstructured micellar environment provides a template for polymer synthesis, leading to the formation of interconnected polymer particles with spherical morphologies...

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Bibliographic Details
Published in:IEEE transactions on magnetics 1994-11, Vol.30 (6), p.4954-4956
Main Authors: O'Connor, C.J., Lee, Y.-S., Tang, J., John, V.T., Kommareddi, N.S., Tata, M., McPherson, G.L., Akkara, J.A., Kaplan, D.L.
Format: Article
Language:English
Subjects:
Biochemistry
Chemistry
Composite materials
Crystal microstructure
Ferrites
Iron
Lipidomics
Liquid crystals
Polymers
Temperature dependence
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Summary:Superparamagnetic iron oxide particles synthesized in water-in-oil microemulsions have been incorporated into a polymer matrix. The microstructured micellar environment provides a template for polymer synthesis, leading to the formation of interconnected polymer particles with spherical morphologies. The resulting iron oxide-polymer composites reveal superparamagnetic properties and low temperature remanence and susceptibility characteristic of a superparamagnet. The results of temperature and field dependent magnetic characterizations of these composites are described. Ultramicrotomed TEM micrographs show that the iron oxide particles (size
ISSN:0018-9464
1941-0069
DOI:10.1109/20.334277