Étude magnétique des matériaux de type Ln<sub>2</sub>M<sub>12</sub>P<sub>7</sub> (Ln = Ce, Sm, Gd et Er; M = Co et Fe)
Bibliographic record
Abstract
A magnetic study has been undertaken on the substances of formula Ln2M12X7. The magnetic susceptibility and the magnetization have been measured as a function of temperature for a constant field. The magnetic susceptibility measurements have been performed from ambient temperature up to 1000 K. The effective paramagnetic moments were deduced from 1 / χ = f(T) curves, assuming a zero moment on the transition metal atoms. It is shown that these values are in good agreement with the theoretical values calculated for the free ions Ln3+. The saturation moment and the paramagnetic Curie temperature values show an antiferromagnetic behavior for Ce2Co12P7 at low temperature. The magnetic moment of Sm2Co12P7 measured at 4.2 and 78 K under a 2.66 T magnetic field shows a complex magnetic structure at low temperature. Our work on these materials show that the magnetic properties of Ln2M12X7 could be interpreted from previous studies on the phases rare earth transition metal LnM.
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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) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| 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".