The Effect of the Interface Width on the Exchange Interaction 
Constant between Ferro- and Antiferromagnets

L. L. Afremov; Афремов Л. Л.; L. O. Brykin; Брыкин Л. О.; I. G. Il’yushin; Ильюшин И. Г.

doi:10.31857/S0015323022601520

The Effect of the Interface Width on the Exchange Interaction Constant between Ferro- and Antiferromagnets

Authors: Afremov L.L.¹, Brykin L.O.², Il’yushin I.G.¹
Affiliations:
1. Department of Theoretical Physics and Intelligent Technologies, Institute of High Technologies and Advanced Materials, Far Eastern Federal University
2. Laboratory for Simulation of Physical Processes, Institute of High Technologies and Advanced Materials, Far Eastern Federal University
Issue: Vol 124, No 2 (2023)
Pages: 169-174
Section: ЭЛЕКТРИЧЕСКИЕ И МАГНИТНЫЕ СВОЙСТВА
URL: https://ruspoj.com/0015-3230/article/view/662796
DOI: https://doi.org/10.31857/S0015323022601520
EDN: https://elibrary.ru/KYSCMJ
ID: 662796

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Abstract

In the approximation of the average spin method, a system of equations for determining the average magnetic moments of atoms at the interface between a ferromagnet and an antiferromagnet is formulated. It is possible to simulate the dependences of interfacial exchange interaction constant Ain on the temperature, antiferromagnetic layer thickness, and interface width by solving the system of equations for an ultrathin Ni/NiO film. It is found that the interfacial exchange interaction constant in a film with a fixed interface width at low temperatures increases with an increase in the thickness of the antiferromagnetic layer. With an
increase in the interface width, the Ain value decreases by a factor of 1.3 and reaches its minimum level.

Keywords

average spin method, ultrathin films, interfacial exchange interaction

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