Structural, optical and magnetic properties of Fe-doped ZnO

Zn1-xFexO (x =0.011, 0.029, 0.048, 0.10, 0.20) thin films have been grown on Al2O3 (0001) substrates by magnetron co-sputtering technique. X-ray diffraction analysis revealed that Fe atoms were successfully incorporated into ZnO host matrix, and the films exhibited wurzite structure up to x = 0.20 w...

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Bibliographic Details
Published in:Journal of physics. Conference series 2009-03, Vol.152 (1), p.012039
Main Authors: Cheng, Wenjuan, Ma, Xueming
Format: Article
Language:English
Subjects:
Aluminum oxide
Ferromagnetism
Lattice parameters
Magnetic properties
Magnetism
Magnetron sputtering
Optical properties
Physics
Room temperature
Substrates
Thin films
Zinc oxide
Zinc sulfide
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Summary:Zn1-xFexO (x =0.011, 0.029, 0.048, 0.10, 0.20) thin films have been grown on Al2O3 (0001) substrates by magnetron co-sputtering technique. X-ray diffraction analysis revealed that Fe atoms were successfully incorporated into ZnO host matrix, and the films exhibited wurzite structure up to x = 0.20 with reduced c-axis lattice constant compared to that of pure ZnO. There are not any secondary phases, and Fe2+ as well as Fe3+ substitutes for Zn2+ of ZnO host. With increasing x, the optical band gap is found to shift slightly to lower energies (66 meV for x = 0.20) than that of the pure ZnO. Magnetization measurement indicated that all samples were ferromagnetic at room temperature. An explanation for the dependence of the optical and magnetic properties of the samples on the value of x is also given.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/152/1/012039