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- W3043248959 abstract "Glasses in the pseudo-binary system (HgS)x (GeS2)1-x were synthesized over the concentration range of 0.0 ≤ x ≤ 0.5. The fundamental glass properties (macroscopic, electric, and vibrational) were studied using differential scanning calorimetry (DSC), direct current (dc) electrical measurements, Raman spectroscopy supported by DFT modeling, and X-ray diffraction. Mercury species in thiogermanate glasses essentially form chain-like (HgS2/2) fragments substituting bridging sulfur between corner- and edge-sharing GeS4/2 tetrahedra. This structural evolution results in a significant monotonic decrease of the glass transition temperatures from 480 to 270 °C. The room-temperature dc conductivity changes non-monotonically with increasing HgS content x over a limited range of 4 × 10-15 to 7 × 10-13 S cm-1. The electronic transport in insulating HgS-GeS2 glasses occurs via extended electronic states. Tetrahedral HgS4/4 fragments also appear in the glass network with increasing x. Their exact population needs further advanced structural studies using diffraction techniques." @default.
- W3043248959 created "2020-07-23" @default.
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- W3043248959 date "2020-07-16" @default.
- W3043248959 modified "2023-09-24" @default.
- W3043248959 title "Mercury Thiogermanate Glasses HgS-GeS<sub>2</sub>: Vibrational, Macroscopic, and Electric Properties" @default.
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- W3043248959 doi "https://doi.org/10.1021/acs.jpcb.0c03673" @default.
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