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Structure-Property Relationships in the xZnO-(1-x)alpha-Fe2O3 Nanoparticle System

Published online by Cambridge University Press:  01 February 2011

Monica Sorescu ,
Lucian Diamandescu  and
Jason Wood
Monica Sorescu
Affiliation:
[email protected], Duquesne University, Physics, 600 Forbes Avenue, Pittsburgh, PA, 15282, United States
Lucian Diamandescu
Affiliation:
[email protected], National Institute for Materials Physics, Bucharest, 77125, Romania
Jason Wood
Affiliation:
[email protected], Duquesne University, Pittsburgh, PA, 15282, United States
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Abstract

The xZnO-(1-x)α-Fe2O3 nanoparticles system has been obtained by mechanochemical activation for x=0.1, 0.3 and 0.5 and for ball milling times ranging from 2 to 24 hours. Structural and morphological characteristics of the zinc-doped hematite system were investigated by X-ray diffraction (XRD) and Mössbauer spectroscopy. As ZnO is not soluble in hematite in the bulk form, the present study clearly demonstrates that the solubility limits of an immiscible system can be extended beyond the limits in the solid state by mechanochemical activation. Moreover, this synthesis route allowed us to reach nanometric particle dimensions, which would make the materials very important for gas sensing applications.

Keywords

mechanical alloyingmagnetic propertiesZn
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 957: Symposium K – Zinc Oxide and Related Materials , 2006 , 0957-K10-03
Copyright
Copyright © Materials Research Society 2007

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References

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