Structure and physical properties of YbZn2Sb2 and YbCd2Sb2
Bibliographic record
Abstract
The ternary ytterbium transition-metal antimonides YbM 2 Sb 2 (M = Zn, Cd) were confirmed by single-crystal X-ray diffraction studies to adopt the CaAl 2 Si 2 -type structure (P 3 m1; a = 4.4424(6) , c = 7.4184(9) for YbZn 2 Sb 2 ; a = 4.6512(7) , c = 7.5661(11) for YbCd 2 Sb 2 ). Electrical resistivity measurements on single crystals revealed weakly metallic behaviour, with a resistivity minimum near 80 K in the case of YbCd 2 Sb 2 . The Yb atoms are predominantly divalent, as indicated by band structure calculations and X-ray photoelectron spectroscopy on YbZn 2 Sb 2 , but nonzero magnetic moments derived from magnetic susceptibility measurements and additional features in the experimental valence band spectrum provide evidence for the presence of some trivalent Yb species.
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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 | 0.000 | 0.000 |
| 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) | 0.000 | 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".