Effects of Cation Site Substitutions on the Thermoelectric Performance of Layered SnBi<sub>2</sub>Te<sub>4</sub> utilizing the Triel Elements Ga, In, and Tl
Bibliographic record
Abstract
Abstract A thorough study on the thermoelectric potential of the layered compound SnBi2Te4 is presented. Phase range studies on SnBi2Te4, unit cell parameters by powder X‐ray diffraction, and electronic structure calculations (both LDA and GGA functional) were performed. Physical property measurements regarding substitution of tin and bismuth with the triel (Tr = Ga, In, Tl) elements are presented towards the improvement of thermoelectric properties, according to TrxSn1–xBi2Te4 and TrxSnBi2–xTe4. The range of inclusion was generally over 0.01 ≤ x ≤ 0.15 to monitor compound changes as well as phase purity limits. Seebeck coefficient, S, electrical conductivity, σ, and thermal conductivity, κ, were measured, yielding the dimensionless Figure of merit, ZT, data over a temperature range between 300 K and 680 K. Results of partial replacements of tin and bismuth are compared and reported. ZTmax values range from 0.10 to 0.34 depending on the dopant, achieved at temperatures from 355 K to 420 K.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".