Structural phase transformations in annealed Pt/Mn/Fe trilayers.

Autor: Kruhlov IO; Metal Physics Department, National Technical University of Ukraine, 'Igor Sikorsky Kyiv Polytechnic Institute', Prospect Peremogy 37, 03056 Kyiv, Ukraine., Shamis OV; Metal Physics Department, National Technical University of Ukraine, 'Igor Sikorsky Kyiv Polytechnic Institute', Prospect Peremogy 37, 03056 Kyiv, Ukraine., Schmidt NY; Institute of Physics, University of Augsburg, Universitätsstraße 1, D-86159 Augsburg, Germany., Karpets MV; Metal Physics Department, National Technical University of Ukraine, 'Igor Sikorsky Kyiv Polytechnic Institute', Prospect Peremogy 37, 03056 Kyiv, Ukraine., Gulyas S; Faculty of Science and Technology, Department of Solid State Physics, University of Debrecen, P.O. Box 400, H-4002 Debrecen, Hungary.; Doctoral School of Physics, University of Debrecen, P.O. Box 400, H-4002 Debrecen, Hungary., Hadjixenophontos E; Department of Materials Science, Chair of Materials Physics, University of Stuttgart, Heisenbergstrasse 3, D-70569, Stuttgart, Germany., Burmak AP; Metal Physics Department, National Technical University of Ukraine, 'Igor Sikorsky Kyiv Polytechnic Institute', Prospect Peremogy 37, 03056 Kyiv, Ukraine., Sidorenko SI; Metal Physics Department, National Technical University of Ukraine, 'Igor Sikorsky Kyiv Polytechnic Institute', Prospect Peremogy 37, 03056 Kyiv, Ukraine., Katona GL; Faculty of Science and Technology, Department of Solid State Physics, University of Debrecen, P.O. Box 400, H-4002 Debrecen, Hungary., Schmitz G; Department of Materials Science, Chair of Materials Physics, University of Stuttgart, Heisenbergstrasse 3, D-70569, Stuttgart, Germany., Albrecht M; Institute of Physics, University of Augsburg, Universitätsstraße 1, D-86159 Augsburg, Germany., Vladymyrskyi IA; Metal Physics Department, National Technical University of Ukraine, 'Igor Sikorsky Kyiv Polytechnic Institute', Prospect Peremogy 37, 03056 Kyiv, Ukraine.
Jazyk: angličtina
Zdroj: Journal of physics. Condensed matter : an Institute of Physics journal [J Phys Condens Matter] 2020 Jun 17; Vol. 32 (36). Date of Electronic Publication: 2020 Jun 17.
DOI: 10.1088/1361-648X/ab9269
Abstrakt: Thermally-activated phase transitions in Pt/Mn/Fe thin films were investigated by a combination of x-ray diffraction, transmission electron microscopy, secondary neutral mass spectrometry depth profiling, atomic force microscopy, and magnetic properties measurements. Post-annealing was carried out in vacuum to different temperatures up to 620 °C. Initially, at temperatures between 280 °C-450 °C first L1 0 -MnPt is formed at the Mn/Pt interface followed by the most likely formation of metastable bcc Fe 3 Pt, which gets transformed by further annealing to fcc Fe 3 Pt and eventually to chemically ordered L1 2 -Fe 3 Pt. The final product after annealing at 620 °C consists of two interesting phases, which are relevant for spintronic applications, antiferromagnetic L1 0 -MnPt with addition of Fe and ferromagnetic L1 2 -Fe 3 Pt, consistent with the initial element composition.
(© 2020 IOP Publishing Ltd.)
Databáze: MEDLINE