Journal
MATERIALS CHEMISTRY AND PHYSICS
Volume 112, Issue 3, Pages 1021-1023Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2008.07.004
Keywords
Diluted magnetic semiconductors; Ferromagnetic; Exchange bias
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Funding
- National Natural Science Foundation of China [60778040]
- Jilin province [20060123]
- science and technology bureau of Key Program for Ministry of Education [207025]
- Science and Technology program of 11th five-Year of Education for Jilin province [2007161, 2007162]
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Zn1-xFexO (x = 0.03,0.05,0.08,0.1) nanocrystals were synthesized from Zn nitrate and Fe nitrate reduced by citrate. The X-ray diffraction (XRD) shows that Zn1-xFexO (x <= 0.08) samples are single phase with the ZnO-like wurtzite structure, while the secondary phase ZnFe2O4 is observed in Zn0.9Fe0.1O sample. Magnetic measurements indicate that Zn1-xFexO (x = 0.03, 0.05, 0.08) are ferromagnetic at room temperature and appear exchange bias varies with Fe concentration. The origin of the ferromagnetic is given by exchange and Zn vacancies in samples. Crown Copyright (C) 2008 Published by Elsevier B.V. All rights reserved.
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