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Structural Effects of Transition Metal Oxide Calcinations on Wurtzite Type Semiconductors That are Ferromagnetic at Room Temperature

Published online by Cambridge University Press:  01 February 2011

Peter Moeck ,
Lori Noice ,
Chunfei Li ,
Amita Gupta ,
Rolf Erni ,
Nigel D. Browning  and
K.V. Rao
Peter Moeck
Affiliation:
pmoeck@pdx.edu, Portland State University, Physics, P.O. Box 751, Portland, OR 97207-0751, Portland, OR, 97201, United States
Lori Noice
Affiliation:
noice@pdx.edu, Portland State University, Portland, OR, 97201, United States
Chunfei Li
Affiliation:
chunfei@pdx.edu, Portland State University, Portland, OR, 97201, United States
Amita Gupta
Affiliation:
amitag@kth.se, Royal Institute of Technology, Stockholm, 100 44, Sweden
Rolf Erni
Affiliation:
rolf.erni@ua.ac.be, University of California, Davis, CA, 95616, United States
Nigel D. Browning
Affiliation:
browning20@llnl.gov, University of California, Davis, CA, 95616, United States
K.V. Rao
Affiliation:
rao@kth.se, Royal Institute of Technology, Stockholm, 100 44, Sweden
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Abstract

Gallium nitride powders and zinc oxide powders were each calcined with a few weight percent of copper oxide and/or magnesium oxide either in air or N2. Powder X-ray diffractometry, transmission electron microscopy, energy dispersive X-ray spectroscopy, and electron energy loss spectroscopy were performed in order to observe calcination induced structural effects on these wurtzite type semiconductors. We note that our earlier magnetic results on Cu doped GaN are qualitatively consistent with recent first principle calculations [Wu et al., Appl. Phys. Lett. 89 (2006) 62505].

Keywords

spintronicferromagneticsemiconducting
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 999: Symposium K – Novel Semiconductor Materials for Room-Temperature Ferromagnetism , 2007 , 0999-K03-01
Copyright
Copyright © Materials Research Society 2007

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References

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