Optical and magneto-optical properties of epitaxial Mn2GaC MAX phase thin film
| Autor: | I. A. Tarasov, Ulf Wiedwald, Sergei Ovchinnikov, Michael Farle, D. V. Shevtsov, Johanna Rosen, S. A. Lyaschenko, S. N. Varnakov, O. A. Maximova |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science Condensed matter physics Magnetism Magnetic circular dichroism Physics::Optics 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Optical conductivity Electronic Optical and Magnetic Materials Magnetic field Condensed Matter::Materials Science Atomic electron transition Phase (matter) 0103 physical sciences MAX phases Thin film 0210 nano-technology |
| Zdroj: | Journal of Magnetism and Magnetic Materials. 528:167803 |
| ISSN: | 0304-8853 |
| Popis: | We report measurements of the dielectric permittivity, optical conductivity and magnetic circular dichroism (MCD) of the epitaxial Mn2GaC MAX-phase thin film in an external magnetic field of up to 200 mT, at temperatures of 296 and 140 K and 1.4 to 3.5 eV. The optical conductivity and MCD spectra show absorption peaks which are consistent with the interband electronic transitions for different positions of Mn, Ga, and C ions as confirmed by theoretical calculations of the spin-dependent density of electronic states. The well-known structural phase transition at 214 K is also seen in the changes of optical, magneto-optical and surface magnetic properties of Mn2GaC in our experiment. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect