The Effect of the Impulse IR Laser Radiation Upon the Mechanical Properties of Thick Films of C60

Abstract

The study of mechanical properties of crystals under exterior factors gives important information on the structure in the body of a crystal. So, for example, exterior magnetic field ~ 1–10 T brings about change in the plastic properties in dielectric crystals and polymers. The influence of pulsing magnetic field more than 10 ΔH on the change of a microhardness monocrystal C60 is also revealed. In the present work the influence of another type of exterior effect in the form of pulsing laser irradiation upon mechanical parameters is studied. The mechanical parameters, the microhardness and acoustic emission, are studied under microindentation. The study is done on thick films C60 on a quartz substrate; the thickness of the film C60 ~ 3 μm. In order to prevent photoboosted oxidizing, the measuring of a microhardness was performed in darkness with a red light filter on the PMT-3 device. The experiments for the study of the acoustic emission (Å) were also carried out with microindentation C60 and the dependences Å from the energy of laser bundle are received. An explanation is offered of a similar dependence of microhardness bound with the dislocation mechanism of plastic deformation.