Abstract

The origin of extrema in the property-composition curves of germanate glasses has been a much debated issue. Using density and structural data for K- and Rb-germanate glasses we find that the short-range order structure alone cannot reproduce the maximum in density. By combining short- and medium-range order structures we calculate the dependence of density on composition in remarkably good agreement with experiment. The results show that the maximum in density can be traced to the coexistence of germanate octahedral units with compact three-membered rings of tetrahedral units.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.