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Published on: April 14, 2020
Phase stabilization and optical response in the ultraviolet range, due to terbium concentration in hafnium oxide
E Montes1, J C Guzmán-Olguín2, C Falcony Guajardo3
1Universidad de Guanajuato, Campus León, División de Ciencias e Ingenierías, Loma del Bosque 103, Colonia Lomas del Campestre, 37150, León, Gto, Mexico.
Abstract:
This work reports the influence of terbium trivalent ions on growing kinetics and the phase in hafnium oxide nanoparticles, as well as response to radiation in the range from 256 to 286. The nanoparticles were obtained by the hydrothermal route maintaining the temperature constant and varying the reaction time and the terbium concentration. The results show a gradual change in the phase with the concentration of terbium trivalent ions, going from the monoclinic phase, present at low concentrations, to the tetragonal phase, which appears from dopant concentrations greater than 5% at., increasing in amount with concentration of dopant. These phases appear as two perfectly defined morphologies. Furthermore, there is a significant change in radiative lifetimes when the tetragonal phase appears.
