Crystal Structure and Physical Properties of the New Antimonide Hf<sub>3</sub>Cu<sub>2</sub>Ge<sub>3.58</sub>Sb<sub>1.42</sub>
Bibliographic record
Abstract
The antimonide Hf 3 Cu 2 Ge 3.58 Sb 1.42 was obtained via a two-step synthesis: arc-melting of hafnium, copper, and germanium under argon was followed by a reaction of the thus obtained ingot with antimony under a vacuum in a silica ampule. This compound adopts a new structure type, space group P 4/ nmm, with lattice dimensions of a = 3.8023(6) Å, c = 24.575(4) Å, V = 355.29(10) Å 3 . The structure of Hf 3 Cu 2 Ge 3.58 Sb 1.42 comprises puckered double layers of the Hf and Ge/Sb atoms as well as ∞ 2 [Cu] and ∞ 2 [Ge/Sb] planar square nets, representing a new intergrowth structure of ZrSiS- and NdTe 3 -like slabs. The ∞ 2 [Ge/Sb] square nets are composed of one disordered site that is statistically mixed occupied by 88% Ge and 12% Sb atoms. Electronic structure calculations predicted metallic properties, subsequently confirmed by an Seebeck and an electrical resistivity measurement.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.002 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.002 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.002 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 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 teacher head, 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".