Effects of Surface Orientation and Termination Plane on Glass‐to‐Crystal Transformation of Lithium Disilicate by Molecular Dynamics Simulations
Abstract
Glass‐to‐crystal transformation of lithium disilicate is studied using molecular dynamics simulations using an effective partial charge potential. The structural evolution of the interface between glassy and crystalline lithium disilicate is analyzed to simulate crystallization of glass on pre‐existing crystal seeds. Besides previously used atomic number density, the distribution of Q n species (Si tetrahedra with n bridging oxygen) is shown to be an effective parameter for following this transformation quantitatively. The early stages of crystal growth are significantly affected by the orientation and termination of the surface of adjacent crystal, as indicated by calculated atomic density, partial ordering, atomic segregation, and an increase in Q 3 concentration. In particular, under‐coordinated Si within the outer crystal layer is found to be most effective in transforming the amorphous structure toward crystallinity. The increase in Q 3 in the glass close to interface region most clearly shows the initial stage of lithium disilicate crystal growth.
- Authors:
-
- Institute for Functional Materials and Devices Lehigh University Bethlehem PA 18015 USA
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1786543
- Grant/Contract Number:
- SC0005010
- Resource Type:
- Publisher's Accepted Manuscript
- Journal Name:
- Physica Status Solidi B. Basic Solid State Physics
- Additional Journal Information:
- Journal Name: Physica Status Solidi B. Basic Solid State Physics Journal Volume: 258 Journal Issue: 9; Journal ID: ISSN 0370-1972
- Publisher:
- Wiley Blackwell (John Wiley & Sons)
- Country of Publication:
- Germany
- Language:
- English
Citation Formats
Sun, Wei, Dierolf, Volkmar, and Jain, Himanshu. Effects of Surface Orientation and Termination Plane on Glass‐to‐Crystal Transformation of Lithium Disilicate by Molecular Dynamics Simulations. Germany: N. p., 2020.
Web. doi:10.1002/pssb.202000427.
Sun, Wei, Dierolf, Volkmar, & Jain, Himanshu. Effects of Surface Orientation and Termination Plane on Glass‐to‐Crystal Transformation of Lithium Disilicate by Molecular Dynamics Simulations. Germany. https://doi.org/10.1002/pssb.202000427
Sun, Wei, Dierolf, Volkmar, and Jain, Himanshu. Sun .
"Effects of Surface Orientation and Termination Plane on Glass‐to‐Crystal Transformation of Lithium Disilicate by Molecular Dynamics Simulations". Germany. https://doi.org/10.1002/pssb.202000427.
@article{osti_1786543,
title = {Effects of Surface Orientation and Termination Plane on Glass‐to‐Crystal Transformation of Lithium Disilicate by Molecular Dynamics Simulations},
author = {Sun, Wei and Dierolf, Volkmar and Jain, Himanshu},
abstractNote = {Glass‐to‐crystal transformation of lithium disilicate is studied using molecular dynamics simulations using an effective partial charge potential. The structural evolution of the interface between glassy and crystalline lithium disilicate is analyzed to simulate crystallization of glass on pre‐existing crystal seeds. Besides previously used atomic number density, the distribution of Q n species (Si tetrahedra with n bridging oxygen) is shown to be an effective parameter for following this transformation quantitatively. The early stages of crystal growth are significantly affected by the orientation and termination of the surface of adjacent crystal, as indicated by calculated atomic density, partial ordering, atomic segregation, and an increase in Q 3 concentration. In particular, under‐coordinated Si within the outer crystal layer is found to be most effective in transforming the amorphous structure toward crystallinity. The increase in Q 3 in the glass close to interface region most clearly shows the initial stage of lithium disilicate crystal growth.},
doi = {10.1002/pssb.202000427},
journal = {Physica Status Solidi B. Basic Solid State Physics},
number = 9,
volume = 258,
place = {Germany},
year = {Sun Dec 06 00:00:00 EST 2020},
month = {Sun Dec 06 00:00:00 EST 2020}
}
https://doi.org/10.1002/pssb.202000427
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