Influence of Pt Ultrathin Interlayers on Magnetic Anisotropy in Ni/NiO Multilayers
Perpendicular magnetic anisotropy at transition metal/oxide interfaces plays a significant role in technological applications such as magnetic storage and spintronics. In this study, we investigate the effects of thermal annealing and Pt ultrathin interlayers on the magnetic anisotropy in Ni/NiO mul...
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MDPI AG
2024-02-01
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| Online Access: | https://www.mdpi.com/2673-8023/4/1/11 |
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| author | Dimitrios I. Anyfantis Alexandros Barnasas Nikolaos C. Diamantopoulos Constantinos M. Tsakiris Georg Schmidt Evangelos Th. Papaioannou Panagiotis Poulopoulos |
| author_facet | Dimitrios I. Anyfantis Alexandros Barnasas Nikolaos C. Diamantopoulos Constantinos M. Tsakiris Georg Schmidt Evangelos Th. Papaioannou Panagiotis Poulopoulos |
| author_sort | Dimitrios I. Anyfantis |
| collection | DOAJ |
| description | Perpendicular magnetic anisotropy at transition metal/oxide interfaces plays a significant role in technological applications such as magnetic storage and spintronics. In this study, we investigate the effects of thermal annealing and Pt ultrathin interlayers on the magnetic anisotropy in Ni/NiO multilayers. Ni/NiO/Pt multilayers were fabricated via radiofrequency magnetron sputtering and natural oxidation. The static magnetic properties of the samples were studied using temperature-dependent SQUID magnetometry. We focus on a sample with a Nickel thickness of 6.7 nm in each multilayer period. This multilayer in Ni/NiO form showed the maximum enhancement of perpendicular magnetic anisotropy after mild thermal annealing in past work. In this work, we study the effects of ultrathin Pt interlayers on the magnetic properties of such a Ni/NiO multilayer before and after annealing. We have observed a further increase in perpendicular magnetic anisotropy, and we study the temperature-dependent magnetic properties of this system, which combines the favorable magnetic properties of Ni/Pt and Ni/NiO multilayers. |
| first_indexed | 2024-04-24T18:00:44Z |
| format | Article |
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| institution | Directory Open Access Journal |
| issn | 2673-8023 |
| language | English |
| last_indexed | 2024-04-24T18:00:44Z |
| publishDate | 2024-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micro |
| spelling | doaj.art-b327f924996347348bc994f17991eaed2024-03-27T13:54:46ZengMDPI AGMicro2673-80232024-02-014115716910.3390/micro4010011Influence of Pt Ultrathin Interlayers on Magnetic Anisotropy in Ni/NiO MultilayersDimitrios I. Anyfantis0Alexandros Barnasas1Nikolaos C. Diamantopoulos2Constantinos M. Tsakiris3Georg Schmidt4Evangelos Th. Papaioannou5Panagiotis Poulopoulos6Department of Materials Science, School of Natural Sciences, University of Patras, 26504 Patras, GreeceDepartment of Materials Science, School of Natural Sciences, University of Patras, 26504 Patras, GreeceDepartment of Materials Science, School of Natural Sciences, University of Patras, 26504 Patras, GreeceDepartment of Materials Science, School of Natural Sciences, University of Patras, 26504 Patras, GreeceInstitut für Physik, Martin-Luther University Halle-Wittenberg, Von-Danckelmann-Platz 3, 06120 Halle, GermanyInstitut für Physik, Martin-Luther University Halle-Wittenberg, Von-Danckelmann-Platz 3, 06120 Halle, GermanyDepartment of Materials Science, School of Natural Sciences, University of Patras, 26504 Patras, GreecePerpendicular magnetic anisotropy at transition metal/oxide interfaces plays a significant role in technological applications such as magnetic storage and spintronics. In this study, we investigate the effects of thermal annealing and Pt ultrathin interlayers on the magnetic anisotropy in Ni/NiO multilayers. Ni/NiO/Pt multilayers were fabricated via radiofrequency magnetron sputtering and natural oxidation. The static magnetic properties of the samples were studied using temperature-dependent SQUID magnetometry. We focus on a sample with a Nickel thickness of 6.7 nm in each multilayer period. This multilayer in Ni/NiO form showed the maximum enhancement of perpendicular magnetic anisotropy after mild thermal annealing in past work. In this work, we study the effects of ultrathin Pt interlayers on the magnetic properties of such a Ni/NiO multilayer before and after annealing. We have observed a further increase in perpendicular magnetic anisotropy, and we study the temperature-dependent magnetic properties of this system, which combines the favorable magnetic properties of Ni/Pt and Ni/NiO multilayers.https://www.mdpi.com/2673-8023/4/1/11magnetic multilayersmagnetic anisotropygrowthsputteringtransition metal oxidesNi |
| spellingShingle | Dimitrios I. Anyfantis Alexandros Barnasas Nikolaos C. Diamantopoulos Constantinos M. Tsakiris Georg Schmidt Evangelos Th. Papaioannou Panagiotis Poulopoulos Influence of Pt Ultrathin Interlayers on Magnetic Anisotropy in Ni/NiO Multilayers Micro magnetic multilayers magnetic anisotropy growth sputtering transition metal oxides Ni |
| title | Influence of Pt Ultrathin Interlayers on Magnetic Anisotropy in Ni/NiO Multilayers |
| title_full | Influence of Pt Ultrathin Interlayers on Magnetic Anisotropy in Ni/NiO Multilayers |
| title_fullStr | Influence of Pt Ultrathin Interlayers on Magnetic Anisotropy in Ni/NiO Multilayers |
| title_full_unstemmed | Influence of Pt Ultrathin Interlayers on Magnetic Anisotropy in Ni/NiO Multilayers |
| title_short | Influence of Pt Ultrathin Interlayers on Magnetic Anisotropy in Ni/NiO Multilayers |
| title_sort | influence of pt ultrathin interlayers on magnetic anisotropy in ni nio multilayers |
| topic | magnetic multilayers magnetic anisotropy growth sputtering transition metal oxides Ni |
| url | https://www.mdpi.com/2673-8023/4/1/11 |
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