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Effects of Fe Substitution on the Structural and Magnetic Properties of CuBO2 Delafossite Oxide
Paper Type  |
Contributed Paper |
Title |
Effects of Fe Substitution on the Structural and Magnetic Properties of CuBO2 Delafossite Oxide |
Author |
Sornamol Traiphop and Teerasak Kamwanna* |
Email |
teekam@kku.ac.th |
|
Abstract: Fe-doped CuBO2 delafossite oxides were synthesized using a conventional solid-state reaction method.
The influence of the Fe concentration (0–3%) on its microstructural, optical and magnetic properties
was investigated. X-ray diffraction (XRD) analysis results revealed the delafossite structure in all the
samples. Lattice spacing of CuB1-xFexO2 samples increased with Fe concentration. Optical properties
measured at room temperature by UVvisible spectroscopy showed a weak absorption in the visible light
and near IR regions. The corresponding direct optical band gap was about 3.01 eV. Magnetic hysteresis
curve measurements showed that the Fe-doped CuBO2 samples exhibited ferromagnetic behavior at
room temperature. The magnetization of this CuB1-xFexO2 delafossite greatly increased with the Fe
content. This indicated that the combined influence of the number of B3+−Fe3+ pairs and long-range
interaction of B3+−Fe3+ coupling produced a mixed effect on the magnetic properties of CuBO2
delafossite oxide. The Curie temperature suggests that ferromagnetism originates from CuB1-xFexO2
matrices. |
|
Start & End Page |
665 - 672 |
Received Date |
2019-07-25 |
Revised Date |
|
Accepted Date |
2020-01-24 |
Full Text |
Download |
Keyword |
delafossite oxides, CuBO2, solid-state reaction, optical properties, magnetic properties |
Volume |
Vol.47 No.4 (Special Issue II : July 2020) |
DOI |
|
Citation |
Traiphop S. and Kamwanna* T., Effects of Fe Substitution on the Structural and Magnetic Properties of CuBO2 Delafossite Oxide, Chiang Mai Journal of Science, 2020; 47(4): 665-672. |
SDGs |
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