Paper Title:
Growth and Magnetism of Natural Multilayers
  Abstract

. 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 (~ 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.

  Info
Periodical
Pages
95-103
DOI
10.4028/www.scientific.net/JNanoR.15.95
Citation
P. Poulopoulos, S.D. Pappas, V. Kapaklis, P.E. Jönsson, E.T. Papaioannou, A. Delimitis, D. Trachylis, M.J. Velgakis, E. I. Meletis, C. Politis, "Growth and Magnetism of Natural Multilayers", Journal of Nano Research, Vol. 15, pp. 95-103, 2011
Online since
September 2011
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