0562520 - FZÚ 2023 RIV US eng J - Článek v odborném periodiku
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
Grant CEP: GA MŠMT LM2018110
GRANT EU: European Commission(XE) 766566 - ASPIN
Institucionální podpora: RVO:68378271
Klíčová slova: in magnetization (Cotton-Mouton effect) * yttrium-iron garnet (YIG)
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 3.7, rok: 2022
Způsob publikování: Omezený přístup
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.
Trvalý link: https://hdl.handle.net/11104/0334842