Hydrogenation Effect on Mg∕Mn Multilayer Thin Films

Abstract

Multilayer Mg/Mn thin films have been prepared using thermal evaporation method at pressure 10−5 torr. Annealing of structure has been performed in atmospheric condition at 600 K constant temperature for one hour. Hydrogenation of annealed thin films has been performed by keeping these in hydrogenation cell at different hydrogen pressures for 30 min. The UV–VIS absorption spectra of thin films have been carried out at room temperature in the wavelength range of 300–800 nm. The optical band gap was found to be increase and conductivity has been found to be decreased with hydrogen pressure. Raman spectra of these sample shows decreasing intensity of peaks with hydrogenation.