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) Å, c = 7.4184(9) Å for YbZn 2 Sb 2 ; a = 4.6512(7) Å, c = 7.5661(11) Å 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.Antimonide / Ytterbium / Electronic structure / Magnetic properties
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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 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 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".