Processing of the Nd 2O 3:SiO 2 system by Laser Floating Zone in air

摘要

Highly textured polycrystalline fibres of monoclinic P21/c Nd2SiO5and hexagonal P63/m Nd9.33(SiO4)6O2phases were obtained by Laser Floating Zone in air from stoichiometric mixtures of Nd2O3and SiO2changing the pulling rate from 10 to 400?mm/h. Distribution of phases barely varied due to the incongruent melt of the Nd2O3:SiO2system, resulting in fibres adequate for microwave devices owing to the dielectric character of the Nd2SiO5phase. Raman analysis was performed in this material for the first time.