ISIS Neutron and Muon Source Data Journal

This is a page describing data taken during an experiment at the ISIS Neutron and Muon Source. Information about the ISIS Neutron and Muon Source can be found at https://www.isis.stfc.ac.uk.

ISIS Neutron and Muon Source

ISIS Neutron and Muon Data

Inelastic Neutron Scattering Study of defective half-Heusler Material

Data collected on the
MARI instrument
at the ISIS facility

Abstract: Typical Half-Heusler compounds, identified as promising high temperature thermoelectric materials due to their unexpected semiconducting nature and good thermal properties. Several HH compounds are recently found to contain high concentrations of vacancies. These vacancies exhibit some specific distributions, such as short-range ordering in Nb0.8CoSb and possible Zig-zag distribution in Eu2ZnSb2. Intriguingly, these vacancy defective compounds exhibit much lower lattice thermal conductivity than their counterparts without vacancies. Here, we synthesized a series of ZrCoSb vacancy-defective compounds that can control the degree of vacancy order and thermal conductivity without changing their composition. These defective ZrCoSb samples can be considered as a hierarchical structure of order at different length scales, short-range order in some samples and long-range order in others. However, a comprehensive understanding is missing due to the lack of an experimental measurements and analysis of lattice dynamics in those compounds. In this proposal, we want to apply neutron scattering technique to study the dynamic spectra, hence to assess the significance of vacancies in the suppression of lattice thermal conductivity.

Public release date: 17 December 2027

Principal Investigator: Miss Cui ping Zhang
Experimenter: Dr Qingyong Ren
Experimenter: Dr Xiaoming Huang
Local Contact: Dr Mohamed Aouane
Experimenter: Mr kang liu
Experimenter: Dr Xiaowen Hao

DOI: 10.5286/ISIS.E.RB2420385-1

Parent DOI: 10.5286/ISIS.E.RB2420385

ISIS Experiment Number: RB2420385

Part Number: 1

This dataset is NOT yet publicly available.
The release date is: 17 December 2027

download
the dataset

Date of Experiment: 13 December 2024

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
Select the data format above to find out more about it.

Data Citation

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

For Example:
Miss Cui ping Zhang et al; (2024): Inelastic Neutron Scattering Study of defective half-Heusler Material , STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2420385-1

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