ISIS Neutron and Muon Source Data Journal

Chemical disorder and network structure of glassy As2Te3

Abstract: Telluride glassy systems are widely used for phase-change optical recording. They are also promising materials for far-IR applications. The atomic structure of telluride glasses is much less known compared to their sulphide and selenide counterparts. A typical example is glassy As2Te3, which exhibits a significant chemical disorder, characterized by homopolar As-As and Te-Te bonds. Recently, high-pressure experiments using glassy As2Te3 have shown a number of unusual phenomena. Surprisingly, our high-energy X-ray diffraction measurements have shown a distinct decrease of homopolar bonds in g-As2Te3, recovered from 8.5 GPa, while an increase of chemical disorder at high pressure was expected. Neutron diffraction measurements are complementary to X-ray scattering results for this particular system and will allow a detailed structural model for g-As2Te3 to be constructed.

Principal Investigator: Professor Eugene Bychkov
Experimenter: Dr Alex Hannon

DOI: 10.5286/ISIS.E.RB1700044

ISIS Experiment Number: RB1700044

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:
Professor Eugene Bychkov et al; (2017): Chemical disorder and network structure of glassy As2Te3, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1700044

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