Disentangling the magneto-optic Kerr effect of manganite epitaxial heterostructures
The magneto-optic Kerr effect can probe the process of magnetization reversal in ferromagnetic thin films and can, thus, be used as an alternative to magnetometry. The Kerr effect is wavelength-dependent and the Kerr rotation can reverse sign, vanishing at particular wavelengths. We investigate the...
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2023-03-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0136831 |
| _version_ | 1797771931743682560 |
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| author | Jörg Schöpf Paul H. M. van Loosdrecht Ionela Lindfors-Vrejoiu |
| author_facet | Jörg Schöpf Paul H. M. van Loosdrecht Ionela Lindfors-Vrejoiu |
| author_sort | Jörg Schöpf |
| collection | DOAJ |
| description | The magneto-optic Kerr effect can probe the process of magnetization reversal in ferromagnetic thin films and can, thus, be used as an alternative to magnetometry. The Kerr effect is wavelength-dependent and the Kerr rotation can reverse sign, vanishing at particular wavelengths. We investigate the epitaxial heterostructures of ferromagnetic manganite, La0.7Sr0.3Mn0.9Ru0.1O3, by using the polar Kerr effect and magnetometry. The manganite layers are separated by or interfaced with a layer of nickelate, NdNiO3. The Kerr rotation hysteresis loops of trilayers, with two manganite layers of different thicknesses separated by a nickelate layer, have intriguing humplike features when measured with light of 400 nm wavelength. By investigating additional reference samples, we disentangle the contributions of the individual layers to the loops: we show that the humps originate from the opposite sense of the Kerr rotation of the two different ferromagnetic layers, combined with the additive behavior of the Kerr signal. The change of sign of the Kerr rotation for the thinner manganite layer is most likely caused by optical interference. |
| first_indexed | 2024-03-12T21:44:46Z |
| format | Article |
| id | doaj.art-d88fd56e9af44bd689c2577be93b0ed8 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-03-12T21:44:46Z |
| publishDate | 2023-03-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-d88fd56e9af44bd689c2577be93b0ed82023-07-26T14:03:58ZengAIP Publishing LLCAIP Advances2158-32262023-03-01133035319035319-510.1063/5.0136831Disentangling the magneto-optic Kerr effect of manganite epitaxial heterostructuresJörg Schöpf0Paul H. M. van Loosdrecht1Ionela Lindfors-Vrejoiu2University of Cologne, II Physics Institute, Cologne, GermanyUniversity of Cologne, II Physics Institute, Cologne, GermanyUniversity of Cologne, II Physics Institute, Cologne, GermanyThe magneto-optic Kerr effect can probe the process of magnetization reversal in ferromagnetic thin films and can, thus, be used as an alternative to magnetometry. The Kerr effect is wavelength-dependent and the Kerr rotation can reverse sign, vanishing at particular wavelengths. We investigate the epitaxial heterostructures of ferromagnetic manganite, La0.7Sr0.3Mn0.9Ru0.1O3, by using the polar Kerr effect and magnetometry. The manganite layers are separated by or interfaced with a layer of nickelate, NdNiO3. The Kerr rotation hysteresis loops of trilayers, with two manganite layers of different thicknesses separated by a nickelate layer, have intriguing humplike features when measured with light of 400 nm wavelength. By investigating additional reference samples, we disentangle the contributions of the individual layers to the loops: we show that the humps originate from the opposite sense of the Kerr rotation of the two different ferromagnetic layers, combined with the additive behavior of the Kerr signal. The change of sign of the Kerr rotation for the thinner manganite layer is most likely caused by optical interference.http://dx.doi.org/10.1063/5.0136831 |
| spellingShingle | Jörg Schöpf Paul H. M. van Loosdrecht Ionela Lindfors-Vrejoiu Disentangling the magneto-optic Kerr effect of manganite epitaxial heterostructures AIP Advances |
| title | Disentangling the magneto-optic Kerr effect of manganite epitaxial heterostructures |
| title_full | Disentangling the magneto-optic Kerr effect of manganite epitaxial heterostructures |
| title_fullStr | Disentangling the magneto-optic Kerr effect of manganite epitaxial heterostructures |
| title_full_unstemmed | Disentangling the magneto-optic Kerr effect of manganite epitaxial heterostructures |
| title_short | Disentangling the magneto-optic Kerr effect of manganite epitaxial heterostructures |
| title_sort | disentangling the magneto optic kerr effect of manganite epitaxial heterostructures |
| url | http://dx.doi.org/10.1063/5.0136831 |
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