Fe-doped ZnO film has been grown by laser molecular beam epitaxy(L-MBE) and structurally characterized by X-ray diffraction(XRD) and scanning electron microscopy(SEM),all of which reveal the high quality of the film.No secondary phase was detected.Resonant photoemission spectroscopy(RPES) with photon energies around the Fe 2p-3d absorption edge is performed to detect the electronic structure in the valence band.A strong resonant effect at a photon energy of 710 eV is observed.Fe3+ is the only valence state of Fe ions in the film and the Fe 3d electronic states are concentrated at binding energies of about 3.8 eV and 7 eV～8 eV.There are no electronic states related to Fe near the Fermi level.Magnetic measurements reveal a typical superparamagnetic property at room temperature.The absence of electronic states related to Fe near the Fermi level and the high quality of the film,with few defects,provide little support to ferromagnetism.
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