Articles you may be interested inEffect of pressure on the critical temperature of single-crystal Y0.95Pr0.05Ba2Cu3O7-δ with a specified planar defect geometry Low Temp. Phys. 40, 699 (2014); 10.1063/1.4894321 Optical properties and energy transfer processes of Ho3+/Er3+-codoped fluorotellurite glass under 1550nm excitation for 2.0μm applications J. Appl. Phys. 116, 033106 (2014); 10.1063/1.4890719 Effect of ionic-size change of the rare earth ion on the electrical properties of the hole doped double perovskite Gd 0.95 Sr 0.05 BaCo 2 O 5.5 AIP Conf. Proc. 1512, 924 (2013); 10.1063/1.4791342 Location of trivalent lanthanide dopant energy levels in (Lu0.5Gd0.5)2O3 J. Appl. Phys. 109, 123518 (2011); 10.1063/1.3597788 2.05 µm emission properties and energy transfer mechanism of germanate glass doped with Ho3+, Tm3+, and Er3+The absorption and emission spectra between the 4 I 15/2 and 4 S 3/2 multiplets of the Er 3ϩ ion in (Er 0.05 Y 0.95 ͒ 2 BaZnO 5 are recorded. From these spectra we have demonstrated the occupancy of two nonequivalent positions by the Er 3ϩ ion in the sample. Time decay measurement, emission versus temperature analysis, and selective site excitation were made to confirm our conclusion. From emission versus temperature for 4 S 3/2 → 4 I 15/2 transitions and from the selective site excitation, we were able to select the group of lines that belong to each site. In this article, we present a table with the energy-level values for the ground 4 I 15/2 and the excited 4 S 3/2 multiplets of the Er 3ϩ ion in each site.