Nikolay A. Cherepanov
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Nikolay A. Cherepanov has a total of 11 co-authors. Here are the top co-authors by number of shared publications:
- Alexey Sergeevich Volegov
Ural Federal University
1 shared publication - Anatoly Yermakov
Ural Branch of the Russian Academy of Sciences
1 shared publication - Artyom S Minin
Department of Technology for Organic Synthesis, Ural Federal University, 19 Mira Str., Yekaterinburg, 620002, Russia
1 shared publication - Danil W. Boukhvalov
Institute of Physics and Technology, Satbayev University, Almaty 050032, Kazakhstan
1 shared publication - Denis V. Starichenko
M.N. Miheev Institute of Metal Physics, Ural Branch of Russian Academy of Sciences, S. Kovalevskaya str., 18, Yekaterinburg 620137, Russia
1 shared publication - Kirill I. Borodin
M.N. Mikheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences, 620108 Ekaterinburg, Russia
1 shared publication
Latest Publications
- Open Access
- 3 August 2023
- Published by MDPI AG in Magnetochemistry
- Vol. 9 (8) , 198
Magnetism and Electronic State of Iron Ions on the Surface and in the Core of TiO2 Nanoparticles
In this paper, the electron and magnetic state of iron placed either on the surface or in the core of TiO2 nanoparticles were investigated using magnetometric methods, electron paramagnetic resonance (EPR) and Mössbauer spectroscopy. It was demonstrated that the EPR spectra of TiO2 samples with iron atoms localized both on the surface and in the core of specific features depending on the composition and size of the nanoparticles. Theoretical calculations using the density functional theory (DFT) method demonstrated that the localization of Fe atoms on the surface is characterized by a considerably larger set of atomic configurations as compared to that in the core of TiO2 nanoparticles. Mössbauer spectra of the samples doped with Fe atoms both on the surface and in the core can be described quite satisfactorily using two and three doublets with different quadrupole splitting, respectively. This probably demonstrates that the Fe atoms on particle surface and in the bulk are in different unlike local surroundings. All iron ions, both on the surface and in the core, were found to be in the Fe3+ high-spin state.
- 3 August 2023
- Published by MDPI AG in Magnetochemistry
- Vol. 9 (8) , 198
Open AccessMagnetism and Electronic State of Iron Ions on the Surface and in the Core of TiO2 Nanoparticles
In this paper, the electron and magnetic state of iron placed either on the surface or in the core of TiO2 nanoparticles were investigated using magnetometric methods, electron paramagnetic resonance (EPR) and Mössbauer spectroscopy. It was demonstrated that the EPR spectra of TiO2 samples with iron atoms localized both on the surface and in the core of specific features depending on the composition and size of the nanoparticles. Theoretical calculations using the density functional theory (DFT) method demonstrated that the localization of Fe atoms on the surface is characterized by a considerably larger set of atomic configurations as compared to that in the core of TiO2 nanoparticles. Mössbauer spectra of the samples doped with Fe atoms both on the surface and in the core can be described quite satisfactorily using two and three doublets with different quadrupole splitting, respectively. This probably demonstrates that the Fe atoms on particle surface and in the bulk are in different unlike local surroundings. All iron ions, both on the surface and in the core, were found to be in the Fe3+ high-spin state.