Synthesis of nanocrystalline NbAl3 by laser ablation technique

Synthesis of nanocrystalline material has been developed using laser ablation technique. NbAl3 nanocrystalline powders have been synthesized by laser ablation and identified by transmission electron microscopy (TEM). The average particle size was measured about 5.0 nm. Production yield and ablation rate were obtained as a function of He background pressure and laser pulse energy by measuring the weight of produced powders and weight loss of the target material before and after experiment. The ablation rate appeared to be relatively constant over the range of the He gas pressure. Production rate varied along with both He gas pressure and laser pulse energy. Optimum condition for efficiently high production rate is at 1.0 Torr of He gas pressure and at 320 mJ of the laser pulse energy.