The estimation of possibility of using order-disorder transition phenomena in Ni, Cu and Au nanoclusters for advancing the efficiency of information recording processes.

Abstract

The opportunity of transition metals nanoclusters' usage as a data bits in memory devices for the recording transition "order-disorder" has been analyzed. Therefore, with the help of the molecular dynamics method on the basis of TB-SMA potential the simulation of metal nanoparticles (D = 1.6-5.0 nm) crystallization processes have been studied. Influence of various conditions of crystallization on formation of internal structure in metal nanoclusters is investigated. The stability boundaries of various crystalline isomers are analyzed. The obtained dependences are compared with the corresponding data obtained for gold, copper and nickel nanoparticles having similar sizes. Nickel and copper clusters are shown to exhibit common features in the formation of their structural properties, whereas gold clusters demonstrate much more complex behavior. The limiting size of nanoparticles is determined, for which a structural "order-disorder" transition necessary for the data recording is still possible.