Data · dataset · 2025
High-temperature electronic transport of Ru2Ti(Si,Al) Heusler compounds
Listed in TU Wien Research Data
Context Heusler compounds with six valence electrons per atom have attracted interest as thermoelectric materials owing to their semimetallic and semiconducting properties.
Description
Here, we theoretically and experimentally investigate electronic transport in Ru2TiSi-based full-Heuslers. We show that electronic transport in this system can be well captured by a two-parabolic-band model.
The larger band gap of Ru2TiSi promises a higher thermoelectric performance, compared to its isovalent family member Fe2VAl, which has been studied as a thermoelectric material for over two decades. Additionally, we identify p-type Ru2TiSi as far more efficient than previously studied n-type compounds and demonstrate that this can be traced back to much lighter and more mobile holes originating from dispersive valence bands.
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Our findings suggest that an exceptionally high dimensionless figure of merit zT > 1 can be realized in these p-type compounds around 700 K upon proper reduction of the lattice thermal conductivity, e.g., by substituting Zr or Hf for Ti. Technical details Temperature-dependent thermoelectric properties (Seebeck coefficient and electrical resistivity). Temperature is given in kelvins, Seebeck coefficient in microvolts per kelvin and resistivity in microohms*centimeter.
Links
Where it is published
- TU Wien Research Data record researchdata.tuwien.ac.at/records/04ts4-pp738 ↗
landing page · from researchdata tuwien ac at
- DOI doi.org/10.48436/04ts4-pp738 ↗
DOI / persistent id · from researchdata tuwien ac at
Catalogue records · 1
- InvenioRDM API researchdata.tuwien.ac.at/api/records/04ts4-pp738 ↗
metadata API · from researchdata tuwien ac at
Topics
- Stated by source
- Physical sciences
- From keywords
- Physics
- Inferred from text
- Electronic and magnetic properties of condensed matter 75%
Provenance · 1 source records, 10 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| TU Wien Research Data | 04ts4-pp738 | 8 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · researchdata tuwien ac at | connector:researchdata_tuwien_ac_at@1.0.0 | |
| concepts[field].anzsrc:field:510404 | enrichment · researchdata tuwien ac at | taxonomy-embedding@1.1.0 | title+keywords+description (75%) |
| concepts[field].local:field:physics | mapping · researchdata tuwien ac at | vocabulary-mapper@1.0.0 | keywords['Physical sciences'] |
| concepts[topic].invenio_subject:researchdata_tuwien_ac_at:physical-sciences | source · researchdata tuwien ac at | connector:researchdata_tuwien_ac_at@1.0.0 | |
| description | source · researchdata tuwien ac at | connector:researchdata_tuwien_ac_at@1.0.0 | /metadata/description |
| license | source · researchdata tuwien ac at | connector:researchdata_tuwien_ac_at@1.0.0 | |
| publication_date | source · researchdata tuwien ac at | connector:researchdata_tuwien_ac_at@1.0.0 | |
| title | source · researchdata tuwien ac at | connector:researchdata_tuwien_ac_at@1.0.0 | /metadata/title |
| updated_date | source · researchdata tuwien ac at | connector:researchdata_tuwien_ac_at@1.0.0 | |
| version_label | source · researchdata tuwien ac at | connector:researchdata_tuwien_ac_at@1.0.0 |