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Nanophase BaFe12O19 synthesized from a nonaqueous microemulsion with Ba- and Fe-containing surfactants

Published online by Cambridge University Press:  03 March 2011

Vishal Chhabra ,
Manjari Lal ,
A.N. Maitra  and
Pushan Ayyub
Vishal Chhabra
Affiliation:
Department of Chemistry, University of Delhi, Delhi 110007, India
Manjari Lal
Affiliation:
Department of Chemistry, University of Delhi, Delhi 110007, India
A.N. Maitra
Affiliation:
Department of Chemistry, University of Delhi, Delhi 110007, India
Pushan Ayyub
Affiliation:
Materials Research Group, Tata Institute of Fundamental Research, Homi Bhabha Road, Bombay 400 005, India
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Abstract

Ultrafine BaFe12O19 with uniform particle size was synthesized from an alcohol-in-oil (nonaqueous) microemulsion system where the metal ions were supplied by the surfactant (metal di-2-ethylhexylsulfosuccinate) molecules themselves. A monodisperse, fine-grained precipitate (Ba-Fe oxalate) was ensured by the steric barrier provided by the surfactant monolayer, while the nonaqueous environment promoted stoichiometric coprecipitation. Pure BaFe12O19 was obtained by calcining the oxalate precursor at or above 950 °C. Structural and magnetic properties of the resulting ultrafine magnetic material are reported.

Type
Rapid Communication
Information
Journal of Materials Research , Volume 10 , Issue 11 , November 1995 , pp. 2689 - 2692
Copyright
Copyright © Materials Research Society 1995

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References

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