Photoluminescence analysis of α-Al2O3 powders doped with Eu3+ and Eu2+ ions

Probing of inversion symmetry site in Eu3+-doped GdPO4 by luminescence study: Concentration and annealing effect

“…Host should have the following characteristics [11][12][13][14][15][16][17][18][19][20][21][22]: (1) maximum transparency in the visible range for display applications or in IR range for optical telecommunications. (2) Low phonon optical vibration.…”

Electronic absorption spectra of Sm(II) and Yb(II) ions in a LiCl–KCl eutectic melt at 450°C

“…However, for some lanthanide ions, divalent ions can be produced under strictly controlled reducing conditions. From our previous paper, it is known that Eu(III) is spontaneously reduced rapidly in high-temperature molten salt media under anaerobic conditions [6] and its spectroscopic characterization provided detailed information on the reduced species [7][8][9]. It was known that divalent samarium and ytterbium may be produced under controlled conditions [10,11].…”

Processing, microstructure and optical properties of the directionally solidified Al2O3–EuAlO3 eutectic rods

“…4, the 5 D 0 -7 F 1 magnetic dipole allowed transition is weaker than that of the 5 D 0 -7 F 2 electric dipole transition. The 5 D 0 -7 F 2 is a hypersensitive transition, that is, depends strongly on the Eu 3 þ local environment [20], showing a higher intensity in non-centrosymmetric sites. In our host, the relative intensity is found to be high, as corresponds to the europium site in the orthorrhombic perovskite [21], without inversion symmetry in the A-site.…”