Giant quadratic magneto-optical response of thin Y3Fe5 O12 films for sensitive magnetometry experiments

Schmoranzerova E, Ostatnicky T, Kimak J, Kriegner D, Reichlova H, Schlitz R, Badura A, Soban Z, Muenzenberg M, Jakob G, Guo EJ, Klaeui M, Nemec P (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Physical Review B American Physical Society

Book Volume: 106

Article Number: 104434

Journal Issue: 10

DOI: 10.1103/PhysRevB.106.104434

Abstract

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.

Involved external institutions

Univerzita Karlova v Praze / Charles University in Prague CZ Czech Republic (CZ) Institute of Physics of the Czech Academy of Sciences / Fyzikální ústav Akademie věd České republiky (FZU) CZ Czech Republic (CZ) Technische Universität Dresden DE Germany (DE) Universität Greifswald DE Germany (DE) Johannes Gutenberg-Universität Mainz (JGU) DE Germany (DE)

How to cite

APA:

Schmoranzerova, E., Ostatnicky, T., Kimak, J., Kriegner, D., Reichlova, H., Schlitz, R.,... Nemec, P. (2022). Giant quadratic magneto-optical response of thin Y3Fe5 O12 films for sensitive magnetometry experiments. Physical Review B, 106(10). https://doi.org/10.1103/PhysRevB.106.104434

MLA:

Schmoranzerova, E., et al. "Giant quadratic magneto-optical response of thin Y3Fe5 O12 films for sensitive magnetometry experiments." Physical Review B 106.10 (2022).

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