Absence of moment fragmentation in the mixed <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>B</mml:mi></mml:math>-site pyrochlore <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Nd</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>GaSbO</mml:mi><mml:mn>7</mml:mn></mml:msub></mml:mrow></mml:math>
Bibliographic record
Abstract
Nd-based pyrochlore oxides have garnered significant interest owing to the moment-fragmentation physics observed in Nd${}_{2}$Zr${}_{2}$O${}_{7}$ and speculated in Nd${}_{2}$Hf${}_{2}$O${}_{7}$. Notably, this phenomenon is absent in Nd${}_{2}$Sn${}_{2}$O${}_{7}$, which features a smaller $B$-site ionic radius. Here, bulk characterization and neutron scattering measurements reveal a similar absence of moment fragmentation in Nd${}_{2}$GaSbO${}_{7}$, which is characterized by significant $B$-site disorder and an extremely small average ionic radius on the $B$ site. These results may indicate that chemical pressure (and not necessarily the $B$-site disorder) plays a key role in the presence or absence of this exotic phenomenon.
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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 | 0.003 | 0.002 |
| Meta-epidemiology (narrow) | 0.002 | 0.004 |
| Meta-epidemiology (broad) | 0.002 | 0.006 |
| Bibliometrics | 0.001 | 0.003 |
| Science and technology studies | 0.002 | 0.003 |
| Scholarly communication | 0.002 | 0.003 |
| Open science | 0.005 | 0.004 |
| Research integrity | 0.002 | 0.004 |
| Insufficient payload (model declined to judge) | 0.064 | 0.008 |
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; both teacher heads agree on what is shown here.
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".