Pr3+-Doped Strontium–Aluminum–Bismuth–Borate Glasses for Laser Applications

Ultrasonic waves, mechanical properties and radiation shielding competence of Er3+ doped lead borate glasses: experimental and theoretical investigations

“…This confirms that the incorporation of Pb ions with the tetrahedral oxidation states that filled the interstices which led to the increment of the Packing density (V t ) values and number of bonds per unit volume n b (calculated using bond compression model [41]) and decreased the average atomic ring size (l), confirming the increase in bridging oxygens. The results are in accordance with the increase in the theoretically obtained elastic moduli that represented in Tables 3 and 4, indicating the increased rigidity of the glass system with increasing Pb ions from 3 to 10 mol percentage content [48][49][50]. A comparison between the experimental elastic bulk modulus (K Exp.…”

Structural, photoluminescence, and optical characteristics of a Sm3+‐doped lead borate–strontium–tungsten glass system: Evaluation of Judd–Ofelt intensity parameters and radiative properties

“…Figure 3a displays Tauc's plot and Figure 3b $$$ ln\alpha $$$ versus photon energy, from which the Urbach energy was evaluated by calculating the reciprocal of the slope of the linear component [7, 17–19, 21].…”

“…Lately, rare earth (RE)-doped glass have gained significant consideration and are used in vast commercial applications. They are employed to develop advanced lasers and optical devices [13][14][15][16][17][18] due to their unique photoluminescence properties [1,[19][20][21]. They are commonly utilized to investigate the structural changes in a glass host due to their distinctive properties emanating from the optical transitions in their unfilled 4f shell [22].…”

XRD, FTIR and ultrasonic investigations of cadmium lead bismuthate glasses

“…PbO has dual role in the structure of glasses, one as a glass modifier (if Pb-O is ionic) and the other as glass former (if Pb-O is covalent) 5 . In a previous study 4,6 , it has been reported that Bi 3+ ions can be present in the glass structure as three [BiO 3 ]or six [BiO 6 ]-coordinated, existing separately or in the mixture. Meanwhile, Pb 2+ ions can be present as three [PbO 3 ]-or four [PbO 4 ]-coordinated.…”

“…3 and PbO 4 in favor of the presence of BiO 6 structural units in the glass network. This results in the formation of Bi(3)-O-Bi(6) and Pb-O-Bi(6) linkages at the expense of Pb-O-Bi(3) linkages. The curves of the radial distribution function (RDF) obtained by the Fourier transformation for PbO-B 2 O 3 glasses concluded that the well-separated peaks due to Pb-O and Pb-Pb correlations appear at about 0.23-0.25 and 0.40 nm, respectively34 .…”