Author:Simon, Fredrik Eriksson, Jens Birch, Lars Hultman

Institute: Department of Thin Film Physics, Faculty of Physics (IFM), Linköping University, SE-581 83 Linköping, Sweden

The formation of α-approximating and quasicrystalline Al–Cu–Fe thin films is an urgent problem in the field of materials science, since these materials have unique physical and mechanical properties, which opens up new horizons for their application in various industries. During the thin film synthesis process, it is important to control the deposition conditions, such as temperature, pressure, and deposition rate, to achieve the desired structure and phase composition.

The use of magnetron sputtering methods, as well as molecular beam epitaxy, makes it possible to create films with a high level of texture and controlled grain sizes. Research shows that variations in the concentration of components can significantly affect the formation of quasicrystalline structures, which necessitates a systematic approach to their study.                                                

A key aspect to achieve stable α-approximating phases is the control of thermal diffusion processes and structural anomaly, which in turn leads to unique mechanical properties and increased fracture resistance. Thus, the formation of such films opens up potential avenues for the creation of new functional materials with improved characteristics.