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Ferromagnetic Mn-Doped GaN Nanowires for Nanospintronics

Published online by Cambridge University Press:  01 February 2011

Doo Suk Han ,
Chan Woong Na ,
Woo Sung Jang ,
Seung Yong Bae  and
Jeunghee Park
Doo Suk Han
Affiliation:
Department of Chemistry, Korea University, Jochiwon 339-700 Korea;
Chan Woong Na
Affiliation:
Department of Chemistry, Korea University, Jochiwon 339-700 Korea;
Woo Sung Jang
Affiliation:
Department of Chemistry, Korea University, Jochiwon 339-700 Korea;
Seung Yong Bae
Affiliation:
Department of Chemistry, Korea University, Jochiwon 339-700 Korea;
Jeunghee Park
Affiliation:
Department of Chemistry, Korea University, Jochiwon 339-700 Korea;
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Abstract

We report Mn-doped GaN nanowires exhibiting ferromagnetism even at room temperature. The growth of single-crystalline wurtzite structured GaN nanowires doped homogeneously with about 5 atomic % Mn was achieved by chemical vapor deposition using the reaction of Ga/GaN/MnCl2 with NH3. The ferromagnetic hysteresis at 5 and 300 K and the temperature-dependent magnetization curves suggest the Curie temperature around 300 K. Negative magnetoresistance of individual nanowires was observed at the temperatures below 100 K.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 877: Symposium S – Magnetic Nanoparticles and Nanowires , 2005 , S6.16
Copyright
Copyright © Materials Research Society 2005

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