Simulation of Interface Enhancement of Multilayer Niobium–Cobalt Nanosystems by Pressing

This article describes the process of formation of clear interfaces between the components of a multilayer nanocomposite. Experimental studies and modeling show that the quality of the interface noticeably deteriorates with an increase in the number of layers, which is associated with the accumulation of defects and an increase in their size on the surface of each subsequently deposited nanolayer of a multilayer system. Preparation or modernization of the surface, on which the atoms of the next layer of the nanosystem are deposited to improve its quality, has a positive effect on the formation of a high-quality interface between the layers. The article considers a method of surface modernization such as pressing. The modified embedded atom method (MEAM) is used as a method for studying the structure and relief of the surface. The computational experiment has been carried out using molecular dynamics simulation. The LAMMPS software package is used in the simulation. The simulation of pressing the substrate, which makes it possible to improve the interface of the nanosystem, and of deposition of the nanofilm are carried out. The simulation of deposition is performed in a stationary temperature regime. The computational experiment is carried out with five temperature regimes: 300, 250, 200, 100, and 50 K. The effectiveness of the proposed technique is analyzed.