Modeling of Magnetic Properties of NiCl${}_2$ Nanostripes, Nanotubes and Fullerenes

Abstract

We show that the magnetic properties of antiferromagnetic layered NiCl${}_2$ can be altered under nano-sizing depending on dimensionality and morphology type of the corresponding nano-forms. By means of Monte-Carlo simulations within classical Heisenberg model, the spin ordering, magnetic part of heat capacity C${}_v$ and Néel temperatures T${}_N$ for multi-walled NiCl${}_2$ nanotubes and a fullerene were calculated and analyzed in comparison with the bulk NiCl${}_2$ and multilayered two-dimensional NiCl${}_2$ crystals and nanostripes. We have found that the nano-structuring of NiCl${}_2$ at the size reducing and at the formation of the closed structures can influence propitiously on the preservation of antiferromagnetic properties.

arXiv comment13 pages, 3 figures, 1 Table