Seminaria

Dnia 2024-01-16 o godzinie 13:15 w Sali 2011 Wydziału Fizyki UwB, mgr Weronika Janus z Wydziału Fizyki i Informatyki Stosowanej Akademii Górniczo-Hutniczej w Krakowie wygłosi wykład pt:

„Modulation of magnetic properties in antiferromagnetic nanostructures by strain”

Serdecznie zapraszamy

Andrzej Maziewski

Jerzy Przeszowski

„Modulation of magnetic properties in antiferromagnetic nanostructures by strain”

mgr. Weronika Janus

Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, Kraków, Poland

Antiferromagnets (AFMs) are robust against external magnetic fields, generate large magnetotransport effects, and exhibit terahertz spin dynamics [1]. These features make them excellent candidates for future spintronic applications. To date, the manipulation of the magnetic state in AFM has been carried out by four groups of methods: magnetic, optical, electrical, and strain manipulation[2]. Lattice distortion in antiferromagnetic layers can be induced by either growing the antiferromagnetic thin film on a lattice-mismatched substrate or exerting piezoelectric strain in AFM/piezoelectric substrate systems. During the talk, I will demonstrate how epitaxial strain and interfacial antiferromagnetic/ferromagnetic coupling can influence the magnetic state of AFM in Fe/NiO/Cr(dCr)/MgO(001) and Fe/NiO/MgO(dMgO)/Cr/MgO(001) systems [3][4]. Furthermore, I will demonstrate the possibility of using piezoelectric strain to control the magnetic state of Fe/CoO bilayers grown on the PMN-PT(001) piezoelectric substrate.

1. Baltz, V. et al. Antiferromagnetic spintronics. Rev. Mod. Phys. 90, 015005 (2018).

2. Song, C. et al. How to manipulate magnetic states of antiferromagnets. Nanotechnology 29, 112001 (2018).

3. Kozioł-Rachwał, A. et al. Control of spin orientation in antiferromagnetic NiO by epitaxial strain and spin-flop coupling. APL Mater. 8, 061107 (2020).

4. Janus, W. et al. Tunable magnetic anisotropy of antiferromagnetic NiO in ( Fe )/ NiO / MgO / Cr / MgO ( 001 ) epitaxial multilayers. Sci. Rep. 13, 4824 (2023).

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