| Abstract [eng] |
In the final project of Master, after the analysis of the scientific literature, the thin layer of bismuth-zirconium oxide was formed on different surfaces by the reactive magnetron sputtering method and the physical properties of the resulting layers were studied. The study found that the thin layers of bismuth-zirconium oxide formed using and not using argon gas exhibit the following mechanical and optical properties: 1) The layers are good for light transmission in the visible light spectrum but don’t transmit the light in the ultraviolet wavelength range. The use of argon gas during layer formation reduces optical permeability. 2) The large band gap (~ 3.74 eV) results in the fact that low energy light wavelengths pass through the material freely, while high energy waves are absorbed. The use of argon gas during layer formation does not affect the absorption coefficient of the layer. 3) The layers are extremely hard, with hardness about 289 HV which is almost equal to Titanium hardness (Titanium 300 HV). The use of argon gas during layer formation increases the hardness of the layer. 4) The material is very elastic, greatly improving the elasticity of the steel. The use of argon gas during the formation of the layer significantly increases the elasticity of the formed layer. By regarding the morphology of the thin layer of bismuth-zirconium oxide, the different surfaces are covered with high quality layers, without major defects. The use of argon gas during formation of a layer, determines the formation of layer’s components into clusters. The author of the master's final thesis thanks the prof. dr. Robert Zabell, Head of the Institute of Solid State Physics at the University of Latvia, for helping measure the Berkovič hardness of the formed bismuth-zirconium oxide thin film and Lithuanian Energy Institute for its assistance in the scanning electron microscopy study and Vickers hardness measurements. Also, to project supervisor Doc. dr. Aleksandrui Iljinui for assistance and problem-solving consultations. |
