Synthesis of Ultrafine Grain Ferrites Academic Article uri icon

abstract

  • Methoxides of nickel(II) and iron(III) were synthesized, mixed in the ratio to form NiFe2O4, aerosolized, hydrated, and then fired in a streamline tubular reactor. Submicrometersized spherical particles were obtained from pyrolysis at temperatures up to 570. At 425, the sudden loss of volatiles shattered the particles to much smaller spheres (with 30% less than 0.1 m) giving a remarkable increase in surface area. Pyrolysis up to 570 caused a gradual increase in the powder density toward that of NiFe2O4. Heating the aerosol product up to just 600 with a heating rate of 5/min yielded pure crystalline nickel ferrite. Copyright 1989, Wiley Blackwell. All rights reserved

published proceedings

  • Journal of the American Ceramic Society

author list (cited authors)

  • Clearfield, A., Gadalla, A. M., Marlow, W. H., & Livingston, T. W.

citation count

  • 18

complete list of authors

  • Clearfield, Abraham||Gadalla, Ahmed M||Marlow, William H||Livingston, Terry W

publication date

  • October 1989

publisher