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Anomalous Hall effect and origin of magnetism in Zn1-xCoxO thin films at low Co content

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5 Author(s)
Peng, Y.Z. ; Data Storage Institute, DSI Building, 5 Engineering Drive 1, Singapore 117608, Singapore and Electrical and Computer Engineering Department, National University of Singapore, Singapore 119260, Singapore ; Liew, T. ; Chong, T.C. ; An, C.W.
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A small anomalous Hall effect signal of a Zn1-xCoxO (x=0.05) thin film was observed, indicating that there presents sp-d interactions in the Zn1-xCoxO thin film. However, under a self-held setup, we did not obtain observable differences between the M-H curves when the near band electrons were changed. Integrated with our previous results, possible mechanisms for the magnetism of Zn1-xCoxO thin films were proposed based on a picture of spins in a carrier sea.

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Applied Physics Letters  (Volume:88 ,  Issue: 19 )