Validity of the Néel-Arrhenius model for highly anisotropic CoxFe3−xO4 nanoparticles

We report a systematic study on the structural and magnetic properties of CoxFe3−xO4 magnetic nanoparticles with sizes between 5 and 25 nm, prepared by thermal decomposition of Fe(acac)3 and Co(acac)2. The large magneto-crystalline anisotropy of the synthesized particles resulted in high blocking te...

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Bibliographic Details
Published in:Journal of applied physics 2015-11, Vol.118 (18)
Main Authors: Torres, T. E., Lima, E., Mayoral, A., Ibarra, A., Marquina, C., Ibarra, M. R., Goya, G. F.
Format: Article
Language:English
Subjects:
Anisotropy
Applied physics
Coercivity
Dependence
Magnetic measurement
Magnetic properties
Magnetism
Nanoparticles
Thermal decomposition
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Summary:We report a systematic study on the structural and magnetic properties of CoxFe3−xO4 magnetic nanoparticles with sizes between 5 and 25 nm, prepared by thermal decomposition of Fe(acac)3 and Co(acac)2. The large magneto-crystalline anisotropy of the synthesized particles resulted in high blocking temperatures (42 K 
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4935146