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Ferromagnetism study of Co0.2MgxZn0.8−xO films prepared by the sol–gel method
Co 0.2 Mg x Zn 0.8− x O films prepared with different molar ratio of magnesium acetate to zinc acetate were deposited on substrates by the sol–gel technique. X-ray diffraction, photoluminescence (PL) and ferromagnetism measurements were used to characterize the Co 0.2 Mg x Zn 0.8− x O diluted magnet...
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Published in: | Journal of sol-gel science and technology 2009, Vol.52 (1), p.109-112 |
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Main Authors: | , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Online Access: | Get full text |
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Summary: | Co
0.2
Mg
x
Zn
0.8−
x
O films prepared with different molar ratio of magnesium acetate to zinc acetate were deposited on substrates by the sol–gel technique. X-ray diffraction, photoluminescence (PL) and ferromagnetism measurements were used to characterize the Co
0.2
Mg
x
Zn
0.8−
x
O diluted magnetic semiconductors. The acceptor-like defects were determined in the PL band and the intensity of the acceptor-related PL increased with increasing Mg concentration. Therefore, an increase in the number of the acceptor-like defects (zinc vacancies especially) in the Co
0.2
Mg
x
Zn
0.8−
x
O film may lead to the enhancement of the magnetic properties. It is worth noting that changes in Mg concentration and the number of the acceptor-like defects are important issues for producing strong ferromagnetism Co
0.2
Mg
x
Zn
0.8−
x
O films prepared by the sol–gel method. |
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ISSN: | 0928-0707 1573-4846 |
DOI: | 10.1007/s10971-009-2009-z |