Laser excited spectroscopy of Gd3+ ions in crystalline and glass borate hosts with comparable composition

Study of the Vibronic Transitions of Gd3+and Eu3+in Crystalline Materials and Glasses of the Same Composition

“…The positions of these vibronic transitions are in agreement with the data from the literature (10). The fact that the energetic position of the vibronic transitions are within the experimental error the same in the glass and the crystalline material is in agreement with the results from Refs.…”

“…The R value obtained for crystalline LaB O : Gd> (0.026) differs from the result presented by Verweij et al (10) on GdB O (0.12). This difference can be explained by the fact that Verweij et al used a 100% Gd> crystalline material in which reabsorption may occur.…”

“…(10) and (11), respectively. To obtain glasses, the starting materials were heated at 1200°C for half an hour in quartz crucibles and subsequently poured out in carbon crucibles (at room temperature).…”

“…The position of these vibronic transitions is in agreement with data from the literature on Raman and IR spectroscopy on these materials. These vibronic transitions are ascribed to coupling with P-O stretching vibrations (9)(10)(11).…”

“…The lanthanide ion is at the center of a distorted ten-cornered polyhedron of oxygen ions. The unit cell of crystalline LaB O is monoclinic with space group I2/c (10,12).…”