Composition dependent structural and optical properties of Sm3+-doped sodium borate and sodium fluoroborate glasses

Influence of Alkali Metal Ions on the Structural and Spectroscopic Properties of Sm3+-Doped Silicate Glasses

“…Table 9 reports the emission band positions, the effective bandwidths, and the values of emission cross-section σ λ p for some of the transitions originating from the 4 G 5/2 level of the Sm 3+ ions in the silicate glasses. Even though the magnitudes of the intensity parameters obtained in the present work were low, the measured σ λ p values for the 4 G 5/2 → 6 H 7/2 , 9/2 transitions were relatively higher than those reported for other glasses [36][37][38][39]. The highest values were observed for the 4 G 5/2 -6 H 7/2 transitions (6.14 × 10 −22 cm 2 , 4.97 × 10 −22 cm 2 , and 2.31 × 10 −22 cm 2 for the LS, NS, and KS samples, respectively).…”

Emission analysis of RE3+ (RE = Sm, Dy):B2O3‐TeO2‐Li2O‐AlF3 glasses

“…It is known that the J‐O intensity parameter Ω 2 depends on the asymmetrical nature of the local environments around Sm 3+ sites, which suggests that it also depends on the covalency of the Sm‐O bond. In the present investigation, Ω 2 had a smaller value, which indicates that the chemical bond between Sm 3+ ions and ligands was ionic in nature . For the Sm 3+ :LiAlFBT glass, the value of δ (bonding parameter) was also negative, confirming the ionic nature of the Sm‐O bond.…”

Hazardous radiation protective glasses for medical and research laboratories

“…Borate glasses are chosen to be superior and one of the most common glass formers and best host to accommodate higher concentration of rare-earth content with higher phonon energy than compared to other glass formers. These glasses have unique properties such as a low melting point, high thermal stability, and good, rare earth ion solubility [ 7 , 8 ] which makes them perfect choice for radiation shielding host [ 9 ]. Addition of modifiers such as alkali and alkaline earth ions such as sodium oxide (Na 2 O) improves [ 10 ] the optical, physical, structural, and luminescence properties of the glasses [ [11] , [12] , [13] ].…”