Investigation of Elastic Properties of Cu–Mo Solid Solution Thin Films by Brillouin Scattering (CAT#: STEM-ST-0120-YJL)

Introduction

The determination of the mechanical properties of thin layers deposited on a substrate is important regarding physical models as well as technical application purposes. Metastable 'solid solutions' of Cu–Mo could be realized by ion beam sputtering or by ion beam mixing of a Cu/Mo multilayered structure, despite the immiscible character of a Cu–Mo system (positive heat of mixing DH). This new class of materials shows interesting structural properties which motivate an increasing number of studies. For example, it was recently reported that this binary system, for a Cu concentration of 30 at. %, presents a very important resistance to the abrasion and allows a good adhesion between Mo and CuInSe2 films which are used as solar cells.