ISIS Neutron and Muon Source Data Journal

Temperature dependent structure of molten borogermanate glasses for optical applications

Abstract: We propose to measure the structure of barium borogermanate glasses and melts. These are part of an important class of optical materials for hosting optically active rare-earth ions, making them suitable as scintillator, laser, and magneto-optical glasses, in communications, display and radiation detection applications. Importantly, these materials contain two network-forming cations known to adopt variable coordination environments, both of which are expected to be both composition and temperature dependent. In previously studied borates and borosilicates, we have measured the temperature dependence of the sp3 boron fraction (N4), which is a crucial structural parameter governing many important physical properties, and used this to build structure-temperature-property models. By studying the borogermanates we can extend this understanding into the realm where N4(T) is also influenced by interactions with Ge cations undergoing coordination changes between 4-, 5- and 6-fold states.

Experimenter: Mr Reuben Tosh
Experimenter: Dr Emma Barney
Local Contact: Dr Oliver Alderman

DOI: 10.5286/ISIS.E.RB2520089

ISIS Experiment Number: RB2520089

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Mr Reuben Tosh et al; (2026): Temperature dependent structure of molten borogermanate glasses for optical applications, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2520089

Data is released under the CC-BY-4.0 license.