Spin-lattice relaxation of Nd3+ and Tb3+ in phosphate and sodium borate silica glasses

摘要

The experimental study of the electron spin-lattice relaxation (SLR) of Nd3+ and Tb3+ ions in phosphate and sodium borate silica glasses was performed. Measurements were made with electron spin echo technique. Temperature dependences of spin-lattice relaxation of the rare earth ions reveal the contribution of different relaxation mechanisms. A stepped like change of the SLR rate observed for Tb3+ and Nd3+ ions was explained by cross relaxation.