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Formation of maghemite nanoparticles in bismuth telluride materials containing iron

Published online by Cambridge University Press:  31 January 2011

R.M. Catchings III ,
A.N. Thorpe ,
J.R. Grant ,
R. Douglas ,
C. Viragh ,
M.A. Adel-Hadadi ,
K. Gaskell  and
A. Barkatt
R. Douglas
Affiliation:
Department of Physics and Astronomy, Howard University, Washington, District of Columbia 20059
C. Viragh
Affiliation:
Vitreous State Laboratory, The Catholic University of America, Washington, District of Columbia 20064
M.A. Adel-Hadadi
Affiliation:
Department of Chemistry, The Catholic University of America, Washington, District of Columbia 20064
K. Gaskell
Affiliation:
Department of Chemistry, University of Maryland–College Park, College Park, Maryland 20742
A. Barkatt
Affiliation:
Department of Chemistry, The Catholic University of America, Washington, District of Columbia 20064
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Abstract

Bismuth telluride (Bi2Te3) systems containing 2%, 4%, and 8% of iron were prepared using a low temperature wet chemical method. Iron oxide nanoparticles were formed when the samples were heated in hydrogen at 250 °C for at least six hours. The samples were characterized by x-ray diffraction, magnetization, magnetic susceptibility, x-ray photoelectron spectroscopy, Mössbauer spectroscopy, and wet chemical analysis measurements. The nanoparticles of iron oxide were identified as γ-Fe2O3 with a particle size of ˜5 nm.

Keywords

BiTeNanoscale
Type
Articles
Information
Journal of Materials Research , Volume 25 , Issue 10 , October 2010 , pp. 2042 - 2046
Copyright
Copyright © Materials Research Society 2010

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