Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2021

Идентификатор DOI: 10.1016/j.jmmm.2021.167803

Ключевые слова: epitaxial thin films, magnetic circular dichroism, magnetism, max phases, spectral magneto-ellipsometry

Аннотация: 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. © 2021 Elsevier B.V.

Журнал: Journal of Magnetism and Magnetic Materials

Выпуск журнала: Vol. 528

Номера страниц: 167803

ISSN журнала: 03048853

Издатель: Elsevier B.V.

• Lyaschenko Sergey (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Akademgomdok 50,Bld 38, Krasnoyarsk 660036, Russia)
• Maximova Olga (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Akademgomdok 50,Bld 38, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia)
• Shevtsov Dmitriy (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Akademgomdok 50,Bld 38, Krasnoyarsk 660036, Russia)
• Varnakov Sergey (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Akademgomdok 50,Bld 38, Krasnoyarsk 660036, Russia)
• Tarasov Ivan (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Akademgomdok 50,Bld 38, Krasnoyarsk 660036, Russia)
• Wiedwald Ulf (Univ Duisburg Essen, Fac Phys, D-47057 Duisburg, Germany)
• Rosen Johanna (Linkoping Univ, Dept Phys Chem & Biol IFM, Thin Film Phys Div, SE-58183 Linkoping, Sweden)
• Ovchinnikov Sergei (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Akademgomdok 50,Bld 38, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia)
• Farle Michael (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Akademgomdok 50,Bld 38, Krasnoyarsk 660036, Russia; Univ Duisburg Essen, Fac Phys, D-47057 Duisburg, Germany)

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