0562520 - FZÚ 2023 RIV US eng J - Journal Article
Schmoranzerová, E. - Ostatnický, T. - Kimák, J. - Kriegner, Dominik - Reichlová, Helena - Schlitz, R. - Baďura, A. - Šobáň, Zbyněk - Münzenberg, M. - Jakob, G. - Guo, E.-J. - Kläui, M. - Němec, P.
Giant quadratic magneto-optical response of thin Y₃Fe₅O₁₂ films for sensitive magnetometry experiments.
Physical Review B. Roč. 106, č. 10 (2022), č. článku 104434. ISSN 2469-9950. E-ISSN 2469-9969
R&D Projects: GA MŠMT LM2018110
EU Projects: European Commission(XE) 766566 - ASPIN
Institutional support: RVO:68378271
Keywords : in magnetization (Cotton-Mouton effect) * yttrium-iron garnet (YIG)
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 3.7, year: 2022
Method of publishing: Limited access
https://doi.org/10.1103/PhysRevB.106.104434

We report an observation of a giant magneto-optical (MO) effect quadratic in magnetization (Cotton-Mouton effect) in a 50 nm thick layer of yttrium-iron garnet (YIG). By a combined theoretical and experimental approach, we managed to quantify both linear and quadratic MO effects in the studied material. We show that the quadratic MO signal in the thin YIG film can exceed the linear MO response, reaching values of 450 μrad that are comparable with Heusler alloys or ferromagnetic semiconductors. This relative enhancement of the quadratic MO response relative to the linear MO response is attributed to antiferromagnetic coupling of two Fe sublattices. Furthermore, we demonstrate that a proper choice of experimental conditions, particularly with respect to the used wavelength, is crucial for optimization of the quadratic MO effect, which can be used very efficiently for magnetometry measurement.
Permanent Link: https://hdl.handle.net/11104/0334842