Growth and Magnetism of Natural Multilayers
2011 (English)In: Journal of Nano Research, ISSN 1662-5250, Vol. 15, 95-103 p.Article in journal (Refereed) Published
In this work, we present a simple method to fabricate high quality Ni/NiO multilayers with the use of a single magnetron sputtering head. Namely, at the end of the deposition of each single Ni layer, air is let to flow into the vacuum chamber through a leak valve. Then, a very thin NiO layer (similar to 1nm) is formed by natural oxidation. The process is reproducible and the result is the formation of a multilayer with excellent layering. Magnetization hysteresis loops recorded at 5 K and room temperature reveal a tendency for perpendicular magnetic anisotropy as the thickness of the individual Ni layers decreases. It is shown that the Ni/NiO interface has sizeable positive surface/interface anisotropy, i.e. it favors the development of perpendicular magnetic anisotropy. This is rather unusual for a Ni-based multilayered system and may render Ni/NiO multilayers useful for magneto-optical recording applications.
Place, publisher, year, edition, pages
2011. Vol. 15, 95-103 p.
Ni, NiO, multilayers, growth, spintronics, magnetization, anisotropy, photovoltaics
IdentifiersURN: urn:nbn:se:uu:diva-161304DOI: 10.4028/www.scientific.net/JNanoR.15.95ISI: 000295909100010OAI: oai:DiVA.org:uu-161304DiVA: diva2:455727