Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Saurav Bista"'
Autor:
Jonathan F. Stebbins, Saurav Bista
Publikováno v:
Journal of Non-Crystalline Solids. 505:234-240
Silicon cations with five or six oxygen first neighbors (SiO5 and SiO6, pentacoordinated and hexacoordinated) are known primarily from alkali and alkaline earth silicate glasses melted at pressures up to about 12 GPa, where their formation is thought
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87c94883eba4bcf7ed4f3ea9d1e74348
https://doi.org/10.1016/j.jnoncrysol.2018.11.001
https://doi.org/10.1016/j.jnoncrysol.2018.11.001
Autor:
Morten Mattrup Smedskjær, Jonathan F. Stebbins, Jingshi Wu, Saurav Bista, Sylwester J. Rzoska, Michal Bockowski, Randall E. Youngman, Timothy Michael Gross, Liping Huang, Siva Priya Jaccani
Publikováno v:
Wu, J, Gross, T M, Huang, L, Jaccani, S P, Youngman, R E, Rzoska, S J, Bockowski, M, Bista, S, Stebbins, J F & Smedskjær, M M 2020, ' Composition and pressure effects on the structure, elastic properties and hardness of aluminoborosilicate glass ', Journal of Non-Crystalline Solids, vol. 530, 119797 . https://doi.org/10.1016/j.jnoncrysol.2019.119797
A series of calcium-aluminoborosilicate glasses with different ratios of B2O3/SiO2 have been isostatically compressed at 1 and 2 GPa at temperatures above their glass transition temperatures. Boron and aluminum coordination numbers were quantified fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::234b2fc270e0a1490dc3ae832e976034
https://vbn.aau.dk/da/publications/581d3ae8-f687-4c3e-8e23-1643649cbf9d
https://vbn.aau.dk/da/publications/581d3ae8-f687-4c3e-8e23-1643649cbf9d
Publikováno v:
Journal of Non-Crystalline Solids. 478:50-57
We report here the effects of compression on the network cation coordination and overall densification of 15CaO·15Al2O3·xB2O3·(70 − x)SiO2 glasses quenched from near glass transition temperatures at pressures of 1.5 to 3 GPa. Al and B coordinati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bbcbb35a9912ae3dba9ae3bcfc2e6b85
https://doi.org/10.1016/j.jnoncrysol.2017.09.053
https://doi.org/10.1016/j.jnoncrysol.2017.09.053
Autor:
Jonathan F. Stebbins, Saurav Bista
Publikováno v:
American Mineralogist. 102:1657-1666
Previous studies have shown that both NBO content and modifier cation field strength play important roles in increasing the network cation coordination with increasing pressure. It has been observed in previous studies that the increase in average Al
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a938f0b4fb8bb8c78804fb61fc74330
https://doi.org/10.2138/am-2017-6081
https://doi.org/10.2138/am-2017-6081
Publikováno v:
American Mineralogist. 100:2298-2307
In the pressure range in the Earth’s mantle where many basaltic magmas are generated (1 to 3 GPa) (Stolper et al. 1981), increases in the coordination numbers of the network-forming cations in aluminosilicate melts have generally been considered to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bbf75a0e6ca8c57c7c207c3abf4b26ce
https://doi.org/10.2138/am-2015-5258
https://doi.org/10.2138/am-2015-5258
Publikováno v:
The Journal of Chemical Physics. 144:044502
Aluminoborosilicate glasses containing relatively high field strength modifiers (Ca, La, and Y) have been compressed at pressures up to 3 GPa and near the glass transition temperature (Tg) and quenched to room temperature at high pressure followed by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::51253dca32ad9adb385bd58149569cba
https://doi.org/10.1063/1.4940691
https://doi.org/10.1063/1.4940691