IngentaConnect Atomic Engineering of Mixed Ferrite and Core-Shell Nanoparticles

Authors: Morrison, Shannon A.; Cahill, Christopher L.; Carpenter, Everett E.; Calvin, Scott; Harris, Vincent G.

Source: Journal of Nanoscience and Nanotechnology, Volume 5, Number 9, September 2005 , pp. 1323-1344(22)

Publisher: American Scientific Publishers

Abstract:

Nanoparticulate ferrites such as manganese zinc ferrite and nickel zinc ferrite hold great promise for advanced applications in power electronics. The use of these materials in current applications requires fine control over the nanoparticle size as well as size distribution to maximize their packing density. While there are several techniques for the synthesis of ferrite nanoparticles, reverse micelle techniques provide the greatest flexibility and control over size, crystallinity, and magnetic properties. Recipes for the synthesis of manganese zinc ferrite, nickel zinc ferrite, and an enhanced ferrite are presented along with analysis of the crystalline and magnetic properties. Comparisons are made on the quality of nanoparticles produced using different surfactant systems. The importance of various reaction conditions is explored with a discussion on the corresponding effects on the magnetic properties, particle morphology, stoichiometry, crystallinity, and phase purity.

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Atomic Engineering of Mixed Ferrite and Core–Shell Nanoparticles