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Article

Magnetic Aspects and Large Exchange Bias of Ni0.9Co0.1/NiCoO Multilayers

1
Department of Materials Science, School of Natural Sciences University of Patras, Rio, 26504 Patras, Greece
2
Institut für Physik, Martin-Luther University Halle-Wittenberg Von-Danckelmann-Platz 3, 06120 Halle, Germany
3
Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden
*
Author to whom correspondence should be addressed.
Received: 14 June 2021 / Revised: 28 June 2021 / Accepted: 29 June 2021 / Published: 2 July 2021
(This article belongs to the Section Microscale Materials Science)
Ultrathin films of Ni0.9Co0.1 were grown by radio frequency magnetron sputtering. By means of a periodic natural oxidation procedure they were transformed into Ni0.9Co0.1/NiCoO multilayers. Room temperature hysteresis loops recorded via the magneto-optic Kerr effect have revealed over all in-plane magnetic anisotropy due to magnetostatic anisotropy. Mild thermal annealing at 250 °C enhanced a tendency for perpendicular magnetic anisotropy, mainly due to an increase of the uniaxial volume anisotropy term. Spin reorientation transition, exchange bias larger than 700 Oe, and strong coercivity enhancement were observed via a superconducting quantum interference device at low temperatures after field cooling. View Full-Text
Keywords: magnetic multilayers; magnetic anisotropy; exchange bias; spintronics; NiCoO magnetic multilayers; magnetic anisotropy; exchange bias; spintronics; NiCoO
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MDPI and ACS Style

Anyfantis, D.I.; Kanistras, N.; Ballani, C.; Barnasas, A.; Kapaklis, V.; Schmidt, G.; Papaioannou, E.T.; Poulopoulos, P. Magnetic Aspects and Large Exchange Bias of Ni0.9Co0.1/NiCoO Multilayers. Micro 2021, 1, 43-54. https://0-doi-org.brum.beds.ac.uk/10.3390/micro1010005

AMA Style

Anyfantis DI, Kanistras N, Ballani C, Barnasas A, Kapaklis V, Schmidt G, Papaioannou ET, Poulopoulos P. Magnetic Aspects and Large Exchange Bias of Ni0.9Co0.1/NiCoO Multilayers. Micro. 2021; 1(1):43-54. https://0-doi-org.brum.beds.ac.uk/10.3390/micro1010005

Chicago/Turabian Style

Anyfantis, Dimitrios I., Nikos Kanistras, Camillo Ballani, Alexandros Barnasas, Vassilios Kapaklis, Georg Schmidt, Evangelos T. Papaioannou, and Panagiotis Poulopoulos. 2021. "Magnetic Aspects and Large Exchange Bias of Ni0.9Co0.1/NiCoO Multilayers" Micro 1, no. 1: 43-54. https://0-doi-org.brum.beds.ac.uk/10.3390/micro1010005

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