Chiang Mai Journal of Science

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
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