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http://dx.doi.org/10.4283/JMAG.2010.15.1.021

Magnetic Property of α-Fe2O3 Nanoparticles Prepared by Sonochemistry and Take-off Technique  

Koo, Y.S. (Department of Physics, Inha University)
Yun, B.K. (Department of Physics, Inha University)
Jung, J.H. (Department of Physics, Inha University)
Publication Information
Journal of Magnetics / v.15, no.1, 2010 , pp. 21-24 More about this Journal
Abstract
A new synthetic method for the formation of uniform $\alpha-Fe_2O_3$ nanoparticles was reported and their magnetic properties were investigated. The sonochemical synthesis and the subsequent take-off technique resulted in spherical shaped $\alpha-Fe_2O_3$ nanoparticles with an average diameter of 60 nm. The temperature- and applied magnetic field-dependent magnetization of the $\alpha-Fe_2O_3$ nanoparticles was explained by the sum of two contributions, i.e., the Morin transition and superparamagnetism, because the critical size for superparamagnetism was within the size variation of the nanoparticles.
Keywords
sonochemical synthesis; $\alpha-Fe_2O_3$; Morin transition; superparamagnetism;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
Times Cited By Web Of Science : 3  (Related Records In Web of Science)
Times Cited By SCOPUS : 2
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