Magnetic State and Phase Composition of Co3C Nanoparticles
| Autor: | Alexander P. Tyutyunnik, Yu. G. Zainulin, A. E. Ermakov, A. Yu. Germov, E. Yu. Medvedev, A. P. Gerashchenko, T. V. D'yachkova, K. N. Mikhalev, M. A. Uimin, S. I. Novikov |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Spin states Analytical chemistry Condensed Matter Physics 01 natural sciences Magnetization Ferromagnetism 0103 physical sciences Materials Chemistry Magnetic nanoparticles Curie temperature Condensed Matter::Strongly Correlated Electrons 010306 general physics Hyperfine structure Local field Electric field gradient |
| Zdroj: | Physics of Metals and Metallography. 120:930-935 |
| ISSN: | 1555-6190 0031-918X |
| Popis: | Nanoparticles Co3C were prepared using solid-phase synthesis under high pressure. The phase composition of the nanoparticles has been analyzed; the magnetization has been measured and 59Со NMR spectra in a local field have been recorded. It is shown that Co3C is a ferromagnet with the Curie temperature TC = 498(10) K. The hyperfine fields and components of electric field gradient tensor were determined for two nonequivalent Co positions in the carbide. The obtained hyperfine fields correspond to the spin state of Co ions S = 1. |
| Databáze: | OpenAIRE |
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