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A key to room-temperature ferromagnetism in Fe-doped ZnO: Cu

S-J. Han·J. W. Song·C. -H. Yang·S. H. Park·J. -H. Park·Y. H. Jeong
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Abstract

Successful synthesis of room-temperature ferromagnetic semiconductors, Zn$_{1-x}$Fe$_{x}$O, is reported. The essential ingredient in achieving room-temperature ferromagnetism in bulk Zn$_{1-x}$Fe$_{x}$O was found to be additional Cu doping. A transition temperature as high as 550 K was obtained in Zn$_{0.94}$Fe$_{0.05}$Cu$_{0.01}$O; the saturation magnetization at room temperature reached a value of $0.75 μ_{\rm B}$ per Fe. Large magnetoresistance was also observed below $100 $K.

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S-J. Han, J. W. Song, C. -H. Yang, S. H. Park, J. -H. Park, Y. H. Jeong. 2002-08-21. A key to room-temperature ferromagnetism in Fe-doped ZnO: Cu. https://doi.org/10.1063/1.1525885

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