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Structural Studies of ZnO Calcined with Transition Metal Oxides

Published online by Cambridge University Press:  01 February 2011

Lori Noice
Affiliation:
lknoice@hotmail.com, Portland State University, Physics, P.O. Box 751, Portland, OR, 97207-0751, United States, 503-725-4248
Bjoern Seipel
Affiliation:
bseipel@pdx.edu, Portland State University, Department of Physics, United States
Georg Grathoff
Affiliation:
GrathoffG@pdx.edu, Portland State University, Department of Geology
Amita Gupta
Affiliation:
amitag@kth.se, The Royal Institute of Technology, Department of Material Science, Sweden
Peter Moeck
Affiliation:
pmoeck@pdx.edu, Portland State University, Department of Physics, United States
V. K. Rao
Affiliation:
rao@kth.se, The Royal Institute of Technology, Department of Material Science, Sweden
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Abstract

Powder X-ray diffraction analyses of Mn-and Cu-doped ZnO powders calcined at 500˚C, show shifts in the wurtzite type semiconductor's lattice constants and unit cell volume which correspond to the nominal concentrations of transition metal dopants. Marked reductions in the a-lattice constant and unit cell volume for a small concentration of Cu dopants, which is not maintained upon increased Cu concentration, suggest a change in the copper ion hybridization state due to the dopant concentration. In all the samples, only ZnO and CuO phases were detected, aiding the ascertainment of any ferromagnetic response from the samples as arising from the formation of a true dilute magnetic semiconductor.

Type
Research Article
Copyright
Copyright © Materials Research Society 2006

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