期刊
JOURNAL OF APPLIED PHYSICS
卷 105, 期 11, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3143108
关键词
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资金
- Department of Defense [W911-NF-051-0304]
- Department of Energy [DE-FG02-08ER46526]
- NSF-EPSCoR Fellowship
- U.S. Department of Energy (DOE) [DE-FG02-08ER46526] Funding Source: U.S. Department of Energy (DOE)
Room temperature ferromagnetism is observed in Zn1-xCuxO (x=0.01, 0.03, and 0.05) thin films grown on Al2O3 substrates by pulsed laser deposition technique. Raman scattering and high resolution transmission electron microscopy analyses confirm the substitution of Cu up to 3% in ZnO host lattice, and the films are nearly single crystalline. Optical transmission and photoluminescence (PL) analyses provide evidence of sp-d exchange interaction in Zn1-xCuxO thin films; the p-d exchange interaction may explain the observed room temperature ferromagnetism in Zn1-xCuxO thin films. Room temperature PL shows the green emission (similar to 2.60 eV) in Cu doped ZnO samples. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3143108]
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