Effect of d-f Exchange Interaction on the Optical Properties of Fe/Gd2O3 Nanostructure in the Infrared Spectral Range
| Authors | A.M. Kasumov1 , V.O. Yukhymchuk2, K.A. Korotkov1 , O.A. Fedorenko3, A.I. Dmitriev1 , V.M. Karavaeva1, Yu.O. Shkurdoda4, A.I. Ievtushenko1 |
| Affiliations |
1Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, Kyiv-142, Ukraine 2Lashkarev Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, Kyiv-28, Ukraine 3Kukhar Institute of Bioorganic Chemistry and Petrochemistry of the National Academy of Sciences of Ukraine, Kyiv-94, Ukraine 4Sumy State University, Sumy-40007, Ukraine |
| Е-mail | k.korotkov@ipms.kyiv.ua |
| Issue | Volume 16, Year 2024, Number 6 |
| Dates | Received 07 September 2024; revised manuscript received 10 December 2024; published online 23 December 2024 |
| Citation | A.M. Kasumov, V.O. Yukhymchuk, K.A. Korotkov, et al., J. Nano- Electron. Phys. 16 No 6, 06026 (2024) |
| DOI | https://doi.org/10.21272/jnep.16(6).06026 |
| PACS Number(s) | 73.20. – r |
| Keywords | Fe (280) , SEM oxide, IR spectroscopy (2) , d-f exchange interaction. |
| Annotation |
The paper deals with the influence of d-f exchange interactions occurring in the contact zone of layers in Fe/REM oxide nanostructures on the features of their infrared absorption spectra. The time-distances, energies and force constants of vibrations of Gd-O and Yb-O atomic bonds in Fe/Gd2O3 and Fe/Yb2O3 nanostructures with significant and small values of the effective magnetic moment of REM, respectively, have been compared. It is shown that the difference between the absorption spectra of these nanostructures and the properties calculated from them indicates the presence of the influence of the d-f exchange interaction on the vibrations of the Gd-O bond and its absence for Yb-O. For the Gd-O bond, the increase in vibrational energy due to the d-f exchange interaction is 0.02-0.11 %. It is shown how the influence of the exchange interaction can be taken into account in the well-known quantum mechanical description of the anharmonicity of the oscillator vibrations by introducing an additional term in the expression for its potential energy. This approach makes it possible to show that the d-f exchange interaction also affects the value of the distance between the nuclei of Gd-O atoms. |
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List of References |
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