On magnetism of nickel clusters in nanoporous carbon
| Autor: | Bela Shanina, S. K. Gordeev, A. Yu. Rogachev, A. E. Kalmykov, R. N. Kyutt, V. V. Sokolov, A. M. Danishevskii |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
inorganic chemicals
Electron density Materials science Magnetism chemistry.chemical_element 02 engineering and technology 01 natural sciences Condensed Matter::Materials Science Magnetization 0103 physical sciences Atom otorhinolaryngologic diseases Cluster (physics) Physics::Atomic Physics 010302 applied physics Magnetic moment equipment and supplies 021001 nanoscience & nanotechnology Condensed Matter Physics Computer Science::Other Electronic Optical and Magnetic Materials Nickel chemistry Chemical physics Condensed Matter::Strongly Correlated Electrons 0210 nano-technology human activities Carbon |
| Zdroj: | Physics of the Solid State. 59:2082-2088 |
| ISSN: | 1090-6460 1063-7834 |
| DOI: | 10.1134/s1063783417100110 |
| Popis: | The structural and magnetometric characteristics of a nanoporous carbon with nickel clusters in nanopores have been studied. The main attention is focused on the fact of substantial decrease in the nickel magnetization as nickel has a close contact to carbon as compared to similar parameter of free nickel microparticles with almost the same sizes. A theoretical model of a periodic cluster consisting of 16 carbon atoms and one nickel atom in a micropore surrounded by carbon atoms has been built. The electron density in such a cluster and its magnetism were found by computer calculations. It is shown that the magnetic moment of a nickel atom in the cluster is substantially smaller than that of a free nickel atom. Based on the results, it is concluded that the decrease in the magnetization of nickel clusters in the carbon environment observed experimentally is due to the adsorption interaction of the nickel and carbon electron subsystems. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink