Issues »  Volume 47, Issue 10

Structure, Magnetic Properties, and Thermal Stability of Mn/Pt/NiFe Stacks

M. Yu. Barabash$^{1,2}$, R. V. Pedan$^{1}$, O. Dubikovskyi$^{1,3}$, A. V. Bodnaruk$^{1,4}$, S. M. Voloshko$^{1}$, I. O. Kruhlov$^{1}$, A. K. Orlov$^{1}$, D. S. Leonov$^{2}$, A. Kaidatzis$^{5,6}$, I. A. Vladymyrskyi$^{1}$

$^{1}$National Technical University of Ukraine ‘Igor Sikorsky Kyiv Polytechnic Institute’, 37, Beresteiskyi Ave., UA-03056 Kyiv, Ukraine
$^{2}$Technical Centre, N.A.S. of Ukraine, 13, Pokrovs’ka Str., UA-04070 Kyiv, Ukraine
$^{3}$V. E. Lashkaryov Institute of Semiconductor Physics, N.A.S. of Ukraine, 41 Nauky Ave., UA-03028 Kyiv, Ukraine
$^{4}$Institute of Physics, N.A.S. of Ukraine, 46 Nauky Ave., 03028 Kyiv, Ukraine
$^{5}$Department of Physics, University of Patras, 26504 Rio, Greece
$^{6}$Institute of Nanoscience and Nanotechnology, N.C.S.R. ‘Demokritos’, Patr. Gregoriou E and 27 Neapoleos Str., 15310 Athens, Greece

Received: 02.07.2025; final version - 12.09.2025. Download: PDF

In this study, we apply an original approach to form the PtMn antiferromagnetic (AFM) phase by using the sequential deposition of Mn and Pt layers onto a heated Si/SiO2 substrate. At the following, this AFM phase is covered by the NiFe ferromagnetic (FM) layer to achieve the AFM/FM exchange coupling prominent for spintronic applications. As shown, the thermal stability of such structure is rather limited: post-deposition annealing at a temperature close to the blocking one (400°C) results in the complete absence of the exchange-bias shift of the hysteresis loop. Per contra, the pronounced exchange-bias effect is observed in the stack sample with Pt/Mn layer grown on the substrate heated up to 500°C.

Key words: annealing, structure, PtMn, FeNi, magnetic properties, antiferromagnet, coercivity, layered stack.

URL: https://mfint.imp.kiev.ua/en/abstract/v47/i10/1017.html

DOI: https://doi.org/10.15407/mfint.47.10.1017

PACS: 68.35.Ct, 68.49.Sf, 68.60.Dv, 75.50.Vv, 75.60.Ej, 75.70.Ak, 82.80.Ms

Citation: M. Yu. Barabash, R. V. Pedan, O. Dubikovskyi, A. V. Bodnaruk, S. M. Voloshko, I. O. Kruhlov, A. K. Orlov, D. S. Leonov, A. Kaidatzis, and I. A. Vladymyrskyi, Structure, Magnetic Properties, and Thermal Stability of Mn/Pt/NiFe Stacks, Metallofiz. Noveishie Tekhnol., 47, No. 10: 1017–1026 (2025)

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