Cu-doped nitrides: Promising candidates for a nitride based spin-aligner

A spin-aligner that shows ferromagnetism at room temperature is indispensable for spintronic applications. Diluted magnetic semiconductors are prospective candidates for a spin-aligner. We show that Cu-doped group-III nitrides show ferromagnetic behavior at room temperature although Cu is an intrins...

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Veröffentlicht in:Journal of crystal growth 2011-05, Vol.323 (1), p.355-358
Hauptverfasser: Ganz, P.R., Fischer, G., Sürgers, C., Schaadt, D.M.
Format: Artikel
Sprache:eng
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Zusammenfassung:A spin-aligner that shows ferromagnetism at room temperature is indispensable for spintronic applications. Diluted magnetic semiconductors are prospective candidates for a spin-aligner. We show that Cu-doped group-III nitrides show ferromagnetic behavior at room temperature although Cu is an intrinsic non-magnetic material. Problems with the building of magnetic secondary phases like in Mn- or Gd-doped nitrides are avoided by using Cu. The formation of Cu-group-III metal compounds is observed. However, these compounds will not affect the ferromagnetic properties and 90% of them can be removed by etching with HNO3 for 5min.
ISSN:0022-0248
1873-5002
DOI:10.1016/j.jcrysgro.2010.10.115