Gd<sub>5</sub>Si<sub>4−<i>x</i></sub>P<sub><i>x</i></sub>: Targeted Structural Changes through Increase in Valence Electron Count
Bibliographic record
Abstract
Phase transformations in the Gd 5 Si 4- x P x system (0 ≤ x ≤ 2), studied through X-ray diffraction techniques, reveal an intimate coupling between the crystal structure and valence electron count. An increase in the valence electron count through P substitution results in breaking the interslab T − T dimers ( d T−T = 3.74 Å; T is a mixture of Si and P) and shear movement of the ∝ 2 [Gd 5 T 4 ] slabs in Gd 5 Si 2.75 P 1.25 . The Gd 5 Si 2.75 P 1.25 phase extends the existence of the orthorhombic Sm 5 Ge 4 -type structures to the valence electron count larger than 31 e − /formula unit. Tight-binding linear-muffin-tin-orbital calculations trace the origin of the T − T dimer cleavage in Gd 5 Si 2.75 P 1.25 to a larger population of antibonding states within the dimers.
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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 | 0.000 | 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) | 0.002 | 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".