Magneto-reflectance effect in ZnO and ZnO:Mn ceramics
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Date
2025
Authors
Korsunska, Nadiia
Melnichuk, Olexandr
Tarasov, G.
Markevich, Iryna
Melnichuk, Lyudmyla
Khomenkova, Larysa
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Abstract
The effect of a magnetic field on the infrared reflectance spectra of undoped and manganese doped ZnO ceramics has been studied. In the undoped samples, an increase in the reflection coefficient was found mainly in the spectral region ν > 580 cm 1 with a slight change in the residual rays range. In the manganese-doped ceramics, the magnetic field results in an increase in the reflection coefficient mainly in the residual rays interval while in the high-frequency region the changes are present also. Based on the modeling of the experimental spectra, it was determined that in the undoped samples, the magnetic field leads to a noticeable increase in the plasmon damping coefficient with an almost unchanged phonon one. In the case of ZnO:Mn ceramics, in addition to an increase in the plasmon damping coefficient, there is a significant decrease in the phonon ones. It is proposed that for the undoped samples the dominant effect is an increase in the effective electron mass, which also occurs in ZnO:Mn samples. In the case of Mn doped samples, it is assumed that the decrease in the phonon damping coefficient may relate to an appearance of defects causing the phonon scattering and reducing their effect in a magnetic field.
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Keywords
ZnO, Mn doping, magnetic field Infrared reflectance, article
Citation
Magneto-reflectance effect in ZnO and ZnO:Mn ceramics / N. Korsunska, O. Melnichuk, G. Tarasov, I. Markevich, L. Melnichuk, L. Khomenkova // Next Materials. - 2025. - Vol. 9. - Art. no. 101300. - https://doi.org/10.1016/j.nxmate.2025.101300
Magneto-reflectance effect in ZnO and ZnO:Mn ceramics / N. Korsunska, O. Melnichuk, G. Tarasov, I. Markevich, L. Melnichuk, L. Khomenkova // Next Materials. - 2025. - Vol. 9. - Art. no. 101300. - https://doi.org/10.1016/j.nxmate.2025.101300
Magneto-reflectance effect in ZnO and ZnO:Mn ceramics / N. Korsunska, O. Melnichuk, G. Tarasov, I. Markevich, L. Melnichuk, L. Khomenkova // Next Materials. - 2025. - Vol. 9. - Art. no. 101300. - https://doi.org/10.1016/j.nxmate.2025.101300