Detailed Studies of Yttrium Thin Films Deposited by Laser Radiation of Different Pulse Durations

Parametric studies have been performed on yttrium films deposited by laser ablation deposition at three different laser pulse durations. Morphological investigations of the film surface have confirmed the strong influence of pulse durations on the density, size and shape of the deposited droplets. The average ablation rate and deposition rate in ns regime resulted to be one order of magnitude higher than those obtained in ps and sub-ps regimes. Present interest in the deposition of Y thin films by laser ablation technique starts from the well known photoemission properties of this metal.