ISIS Neutron and Muon Source Data Journal

Measurement of vibrational spectra in high-thermal-conductivity ceramics

Abstract: In high-voltage electronics, heat dissipation is a major challenge. Ideally the materials in these devices will have a high thermal conductivity; a property determined by vibrations in the material. In order to improve understanding of these materials and develop better alternatives, it is helpful to have a good theoretical model of these vibrations: available approaches include force-fields, tight-binding and density-functional theory. These simulations may be compared to and calibrated against spectra from vibrational spectroscopy. We propose temperature-dependent measurements of the momentum-dependent vibrational spectra of SiC (an established material) and Ga2O3 (an emerging material) using MAPS, in order to verify and improve simulations of the dynamics in these systems. This is linked to development of the Abins software for simulated INS to support direct-geometry experiments.

Principal Investigator: Dr Adam Jackson
Local Contact: Dr Duc Le
Experimenter: Dr Sanghamitra Mukhopadhyay

DOI: 10.5286/ISIS.E.RB2010450

ISIS Experiment Number: RB2010450

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 Adam Jackson et al; (2020): Measurement of vibrational spectra in high-thermal-conductivity ceramics, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2010450

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