This article is cited in 14 papers

XX International Symposium ''Nanophysics and Nanoelectronics'', Nizhny Novgorod, March 14-18, 2016
Surface Physics and Thin Films

Properties of CoPt ferromagnetic layers for application in spin light-emitting diodes

A. V. Zdoroveyshchev^a, M. V. Dorokhin^a, O. V. Vikhrova^a, P. B. Demina^a, A. V. Kudrin^a, A. G. Temiryazev^b, M. P. Temiryazeva<sup>b

a</sup> Scientific-Research Physicotechnical Institute at the Nizhnii Novgorod State University, Nizhnii Novgorod
^b Kotelnikov Institute of Radioengineering and Electronics, Fryazino Branch, Russian Academy of Sciences

Abstract: The magnetic properties of Co$_{45}$Pt$_{55}$ films deposited by electron-beam evaporation in vacuum have been studied. The measurements of the Faraday and Kerr magnetooptical effects confirm the presence of the easy-magnetization axis perpendicular to the Co$_{45}$Pt$_{55}$ surface. It is shown that the perpendicular magnetic anisotropy and the residual magnetization are retained at 300 K for a long time. The magnetic characteristics of the Co$_{45}$Pt$_{55}$ layer surface have been studied by magnetic force microscopy, and “circular” mobile magnetic structures have been detected. The spin light-emitting diodes based on In(Ga)As/GaAs heteronanostructures with Co$_{45}$Pt$_{55}$ contact layers were fabricated. These diodes emit circularly-polarized light in the absence of an external magnetic field.

 English version: Physics of the Solid State, 2016, 58:11, 2267–2270

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