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Spinodal Decomposition and Super-Paramagnetism in Dilute Magnetic Nitride Semiconductors

Published online by Cambridge University Press:  01 February 2011

Kazunori Sato ,
Tetsuya Fukushima  and
Hiroshi Katayama-Yoshida
Kazunori Sato
Affiliation:
ksato@cmp.sanken.osaka-u.ac.jp, Osaka University, The Institute of Scientific and Industrial Research, 8-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japan
Tetsuya Fukushima
Affiliation:
fuku@cmp.sanken.osaka-u.ac.jp, Osaka University, The Institute of Scientific and Industrial Research, 8-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japan
Hiroshi Katayama-Yoshida
Affiliation:
hiroshi@sanken.osaka-u.ac.jp, Osaka University, The Institute of Scientific and Industrial Research, 8-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japan
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Abstract

We discuss origin of ferromagnetism in dilute magnetic semiconductors (DMS) and propose accurate calculation method for Curie temperature from first-principles. For more realistic materials design, we simulate inhomogeneous impurity distribution due to the spinodal decomposition in DMS from first-principles. Combining these techniques, we discuss super-paramagnetism and blocking phenomena in DMS and propose fabrication method of DMS with high blocking temperature.

Keywords

spintronicmagnetic propertiesferromagnetic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 955: Symposium I – Advances in III-V Nitride Semiconductor Materials and Devices , 2006 , 0955-I01-01
Copyright
Copyright © Materials Research Society 2007

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References

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