Characterization of some lead vanadate glasses

Comparative studies in subsolidus areas of ternary oxide systems PbO–V2O5–In2O3 and PbO–V2O5–Fe2O3

“…630-300 cm -1 , much less intense absorption bands were recorded. Based on the literature data, these bands are most probably due to stretching vibrations within the MO 6 (M = Fe, In) octahedra and/or the PbO x polyhedra. They may be caused by deformation vibrations of O-V-O and V-O-V bonds or they can have a mixed character.…”

“…as catalysts in different processes [1][2][3][4], as electrode materials [5] or as glasses with relatively high electrical conductivity and high thermal stability [6,7]. It can be expected that also new phases forming with an involvement of all components of these ternary systems will have interesting properties, too.…”

Comprehensive Study on Elastic Moduli Prediction and Correlation of Glass and Glass Ceramic Derived from Waste Rice Husk

“…Based on SiO 2 gradually reduced to 3 from 4 as the values of ZnO rise and this causes the structural units of SiO 4 to be converted to SiO 3 initiating the rise of NBOs [24][25][26]. Decrease in both and with the rise of ZnO also indicates that the ultrasonic wave encounters more resistance in the ZnO-SiO 2 samples as the amount of ZnO increases [27,28]. Not only that, rise of ZnO in the ZnO-SiO 2 samples also indicates that more Zn 2+ ions exist in the samples and this caused overall more ions in samples to be opened up [29].…”

Effect of Ba-site substitution by Sr on ultrasonic velocity and electron–phonon coupling constant of DyBa2−xSrxCu3O7−δ superconductors

“…Interestingly, the possibility of lattice contribution to the electron pairing mechanism has been supported by a number of experimental evidences [6,7]. The ultrasonic method, which is sensitive to lattice instabilities and phase transitions, was found to be very useful to probe bulk property changes of ceramic materials such as glasses [8][9][10][11], magnetoresistance materials [12][13][14][15], and also high-temperature superconductors [16-24 and references therein]. In the latter, step-like velocity anomalies above 200 K indicating sudden or unexpected elastic hardening taking place in superconducting samples have been observed in several RE123 [16,17], RE1113 [20] and Bi-based samples [18,21].…”