Optical and magneto-optical properties of epitaxial Mn2GaC MAX phase thin film
作者： Ulf Wiedwald , Michael Farle , Ivan Tarasov , Johanna Rosen , Dmitriy Shevtsov
DOI: 10.1016/J.JMMM.2021.167803
关键词: Magnetism 、 Optical conductivity 、 Atomic electron transition 、 MAX phases 、 Phase (matter) 、 Magnetic circular dichroism 、 Magnetic field 、 Thin film 、 Condensed matter physics 、 Materials science
摘要: Abstract We report measurements of the dielectric permittivity, optical conductivity and magnetic circular dichroism (MCD) epitaxial Mn2GaC MAX-phase thin film in an external field up to 200 mT, at temperatures 296 140 K 1.4 3.5 eV. The MCD spectra show absorption peaks which are consistent with interband electronic transitions for different positions Mn, Ga, C ions as confirmed by theoretical calculations spin-dependent density states. well-known structural phase transition 214 K is also seen changes optical, magneto-optical surface properties our experiment.
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