An investigation into the morphology and crystallization process of lithium borate glass containing vanadium oxide

Hammad, Ahmed H.; Abdel-wahab, M. Sh.; Vattamkandathil, Sajith

doi:10.1016/j.jmrt.2021.12.131

Cited by 6 publications

(1 citation statement)

References 46 publications

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“…The T g of the 45V 2 O 5 –25B 2 O 3 –30P 2 O 5 glass is 326.3 °C (Fig. 4 ), much lower than the Tg for usual glasses (for example the usual soda-lime glass has Tg between 520 and 600 °C) and also lower than the T g of other vanadium containing glasses, such as natrium-titanium-vanadium phosphate glass, 289–432 °C 27 , vanadium-boro-tellurite glass, 329–354 °C 28 , vanadium-lithium-borate glass, 345–419 °C 29 , bismuth-phospho-borate-vanadate glass, 350-490 °C 2 , silver-doped vanadium boro-phosphate glass, 420–431 °C 30 , vanadium-zinc-phosphate glass, 426–463 °C 31 , RE-doped doped vanadium phosphate glass, 300-500 °C 32 or vanadium-phosphate glass, 365–557 °C 8 . This lower value of T g can signify a lower activation energy for the conductive properties, as seen for two of the above literature glasses, RE-doped doped vanadium phosphate glass, 0.45–0.57 eV 32 and vanadium-phosphate glass, 48.7 kJ/mol 8 .…”

Section: Resultsmentioning

confidence: 82%

Obtaining and conductive properties of a vanadate-borate-phosphate glass

Eftimie,

Filip,

Danescu

et al. 2023

Sci Rep

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Vanadate glasses exhibit semiconducting property at certain temperatures. This work demonstrates the conductivity of the composition 45V2O5–25B2O3–30P2O5, which is a new glass in the vanadium-boron-phosphorus ternary system that expands the glass forming area reported in literature data. The glass was obtained through a classical melt-quenching technique. The structural composition of the obtained glass was revealed with Raman spectroscopy and the amorphous characteristic has been highlighted with X-ray diffraction. The characteristic temperatures and the thermal expansion coefficient were determined by dilatometry. Based on the experimental measurements of electrical resistance, mathematical calculations were performed, resulting in a conductivity of 2.04·10−6 S/cm at 125 °C, and an activation energy of 42.91 kJ/mol for this glass. Impedance spectroscopy in DC and AC at 100 V and 100 Hz to 2 MHz, respectively, showed a lower activation energy of about 0.166 eV and transition temperatures of 24 °C and 11 °C, respectively. These results were compared with those from the literature considering the temperatures at which the reported conductivities were measured. This glass has potential applications in electronic devices and temperature sensors.

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