Paper Title:
Effect of the Grain Size on Magnetic Properties of Nanocrystalline CoFe2O4 Ferrite
  Abstract

Nanocrystalline CoFe2O4 ferrite have been synthesized by a spraying-coprecipitation method. X-ray diffraction (XRD) and Transmission electron microscope (TEM) confirmed the formation of single-phase CoFe2O4 ferrite nanoparticles in the range 10 nm ~ 100 nm depending on the calcining temperature. The magnetic measurements show that specific saturation magnetization of nanocrystalline CoFe2O4 ferrite increases from 36.1 A•m2•kg-1 to 88.6 A•m2•kg-1 as grain size increases from 12 nm to 98 nm. The coercivity shows a peak with grain size, peaking at around 43 nm. The magnetic behaviour of nanocrystalline CoFe2O4 ferrite might be attributed to the effects of surface and random anisotropy.

  Info
Periodical
Advanced Materials Research (Volumes 308-310)
Chapter
Product Life Cycle Design
Edited by
Jian Gao
Pages
685-688
DOI
10.4028/www.scientific.net/AMR.308-310.685
Citation
Y. Liu, F. F. Min, T. Qiu, J. B. Zhu, M. X. Zhang, "Effect of the Grain Size on Magnetic Properties of Nanocrystalline CoFe2O4 Ferrite", Advanced Materials Research, Vols. 308-310, pp. 685-688, 2011
Online since
August 2011
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Price
$32.00
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