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Magnetic Circular Dichroism of Ferromagnetic Co2+-Doped ZnO
Applied Physics Letters (2006)
  • Kevin R. Kittilstved, University of Massachusetts - Amherst
  • J. Zhao
  • W. K. Liu
  • J. D Bryan
  • D. A. Schwartz
  • D. R. Gamelin

Cobalt-doped ZnO (Co2+:ZnO) films were studied by magnetic circular dichroism (MCD) spectroscopy. A broad 300 K ferromagnetic MCD signal was observed between 1.4 and 4.0 eV after exposure of paramagnetic Co2+:ZnO films to zinc metal vapor, attributed to low-energy photoionization transitions originating from a spin-split donor impurity band in ferromagnetic n-type Co2+:ZnO.

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Kevin R. Kittilstved, J. Zhao, W. K. Liu, J. D Bryan, et al.. "Magnetic Circular Dichroism of Ferromagnetic Co2+-Doped ZnO" Applied Physics Letters Vol. 89 (2006)
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