Structural and magnetic transitions in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mtext>Gd</mml:mtext></mml:mrow><mml:mn>5</mml:mn></mml:msub><mml:msub><mml:mrow><mml:mtext>Si</mml:mtext></mml:mrow><mml:mi>x</mml:mi></mml:msub><mml:msub><mml:mrow><mml:mtext>Ge</mml:mtext></mml:mrow><mml:mrow><mml:mn>4</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mrow><mml:mo>(</mml:mo><mml:mrow><mml:mn>0</mml:mn><mml:mo>≤</mml:mo><mml:mi>x</mml:mi><mml:mo>≤</mml:mo><mml:mn>0.9</mml:mn></mml:mrow><mml:mo>)</mml:mo></mml:mrow></mml:mrow></mml:math>from neutron powder diffraction
Bibliographic record
Abstract
${\text{Gd}}_{5}{\text{Si}}_{x}{\text{Ge}}_{4\ensuremath{-}x}$ $(0\ensuremath{\le}x\ensuremath{\le}0.9)$ has been studied using neutron powder diffraction at a wavelength of $2.3724\text{ }\text{\AA{}}$. Antiferromagnetic ordering of the full $7\text{ }{\ensuremath{\mu}}_{B}$ Gd moments in the $Pn{m}^{\ensuremath{'}}a$ magnetic space group is seen for ${\text{Gd}}_{5}{\text{Ge}}_{4}$, with the moments predominantly parallel to the $c$ axis, with a significant $a$-axis component at the $\text{Gd}\text{ }8{d}_{2}$ site. The remarkably strong (010) antiferromagnetic reflection has been used to map out the structural and magnetic phase diagram for this system and show that the $\text{O}(\text{II})\ensuremath{\rightarrow}\text{O}(\text{I})$ structural transformation never proceeds to completion in zero field. The absence of scattering that could be attributed to long-range FM order in the O(I) modification suggests that an externally applied field may be needed to stabilize the ferromagnetic state.
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.002 | 0.002 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.316 | 0.099 |
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".