Hole-mediated ferromagnetic enhancement and stability in Cu-doped ZnOS alloy thin films

Y. F. Li*, H. L. Pan, B. Yao, R. Deng, Y. Xu, J. C. Li, L. G. Zhang, H. F. Zhao, D. Z. Shen, Tao Wu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

We report room temperature ferromagnetism enhancement of Cu-doped ZnOS (Zn 1xCu xO 1yS y) alloy thin films with high hole concentration. The Zn 0.91Cu 0.09O 0.92S 0.08 alloy thin films with a hole concentration of 4.3×10 19cm 3 show the strongest magnetization of 1.5 B/Cu. First-principles calculation shows that high hole concentration stabilizes the ferromagnetic ordering in the Zn 1xCu xO 1yS y system, indicating a strong correlation between ferromagnetic stability and hole concentration. These results suggest that the Zn 1xCu xO 1yS y alloy with high hole concentration is promising to find applications in spintronic devices.

Original languageEnglish (US)
Article number075002
JournalJournal of Physics D: Applied Physics
Volume45
Issue number7
DOIs
StatePublished - Feb 22 2012

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

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