Ferromagnetism at Room Temperature on Electrodeposited Co2+-Doped ZnO Thin Film

Predicted by the theory, ferromagnetism is expected in Co-doped ZnO. Recently, ferromagnetism above room temperature was reported in thin films as well as in bulk samples made of cobalt-doped zinc oxide. In this study, we report the preparation of ZnO doped with 5% of Co Zn1−xCoxO, x = 0.05 by electrodeposition. Sample characterization using X-ray diffraction, highresolution transmission electron microscopy, and X-ray photoelectron spectroscopy shows that the dopant is substitutional. Moreover, the magnetic properties of Co-doped ZnO samples electrodeposited as a function of field and temperature exhibit clearly ferromagnetism with Curie temperature above 400 K.


Published in:
Journal of The Electrochemical Society, 153, 8, D138-D142
Year:
2006
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 Record created 2006-11-13, last modified 2018-03-18

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