12 research outputs found
MORE ON INTUITIONISTIC FUZZY SUBLATTICES AND THEIR IDEALS
In this paper, we study the concept of intuitionistic fuzzy sublattices and intuitionistic fuzzy ideals with respect to an intuitionistic fuzzy t-norm on an adequate lattice. Some characterizations and properties of these intuitionistic fuzzy sublattices and ideals with respect to intuitionistic fuzzy t-norm are established
Unveiling the effects of doping small nickel clusters with a sulfur impurity
Producción CientíficaSmall free-standing Ni clusters have been widely investigated during
the last decade, but not many of their derived chalcogenides, despite their interest
in technology and the new prospects that the nanoscale may open. The present
work uncovers the effects of the S-doping on the structural, electronic and magnetic
properties of Nin, n=1-10 clusters. Density functional theoretic calculations
within the generalized gradient approximation for the exchange and correlation
were conducted to explore the structural, electronic, and magnetic properties of
the resulting NinS chalcogenide nanoparticles. The sulfur impurity is always adsorbed
on the 3-fold holow sites available on the nickel host, in qualitative agreement
with recent results of S adsorption on Ni(111) surfaces. S-doping tends to
enlarge the average Ni-Ni inter-atomic distance but enhaces the thermodinamical
stability of Ni clusters. It also increases the vertical ionization energy and electron
affinity. However, S-doping has a small effect on the magnetism of small Ni clusters.
According to the spin-dependent HOMO-LUMO gap, most of these clusters
are good candidates as molecular junctions for spin filtering at low bias voltage.Algerian Ministry of Higher Education and Scientific Research (project CNEPRU B00L02UN150120130013)Junta de Castilla y León (Project VA124G18