Specific features of magnetic states of impurity iron ions in the perovskite La0.75Sr0.25Co0.98 57Fe0.02O3
| Autor: | V. S. Pokatilov, A. O. Makarova, V. V. Pokatilov, M. E. Matsnev, Vyacheslav S. Rusakov |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Anisotropy energy Condensed matter physics Magnetic moment Relaxation (NMR) 02 engineering and technology Atmospheric temperature range 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials Condensed Matter::Materials Science Condensed Matter::Superconductivity 0103 physical sciences Mössbauer spectroscopy Condensed Matter::Strongly Correlated Electrons 010306 general physics 0210 nano-technology Hyperfine structure Superparamagnetism Perovskite (structure) |
| Zdroj: | Physics of the Solid State. 58:315-318 |
| ISSN: | 1090-6460 1063-7834 |
| DOI: | 10.1134/s1063783416020220 |
| Popis: | Single-phase polycrystalline La0.75Sr0.25Co0.9857Fe0.02O3 samples have been prepared by solidstate ceramic technology. The samples have the rhombohedral structure (space group \(R\bar 3c\)). The studies of perovskite La0.75Sr0.25Co0.9857Fe0.02O3 by Mossbauer spectroscopy on impurity 57Fe nuclei in the temperature range of 5–293 K have revealed the existence of a superparamagnetic relaxation in the temperature range of 100–210 K. The parameters of hyperfine interactions (hyperfine magnetic fields, line shifts, and quadrupole shifts) and the anisotropy energy have been measured, and the frequencies of magnetic moment relaxation of iron ions have been estimated. |
| Databáze: | OpenAIRE |
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