ISIS Neutron and Muon Source Data Journal

Phonon dispersions measurements of a high-entropy GeTe-based thermoelectrics with glass-like lattice thermal conductivity

Abstract: GeTe-based high entropy alloys harbor good electron transport and exhibit glass-like ultralow lattice thermal conductivity, leading to excellent thermoelectric performance. So far, most efforts have been made to improve the TE performance in the system. Still, the microscopic mechanism of the disordered arrangement of atoms, phonon properties, and thermal conductivity has rarely been explicitly explored. Here, we propose to employ the MERLIN spectrometer to run a full map of the phonon dispersion for a high-entropy GeTe compound. Together with powder diffraction measurement and first-principle simulation, it is expected to shed light on the complex mechanism for the effects of high-entropy structure on lattice thermal conductivity.

Principal Investigator: Dr Zhilun Lu
Experimenter: Dr Qingyong Ren
Local Contact: Dr David Voneshen
Experimenter: Dr Xiaowen Hao

DOI: 10.5286/ISIS.E.RB2610187

ISIS Experiment Number: RB2610187

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:
Dr Zhilun Lu et al; (2026): Phonon dispersions measurements of a high-entropy GeTe-based thermoelectrics with glass-like lattice thermal conductivity, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2610187

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