Co magnetism and the order of the magnetic transition in Er1−xGdxCo2 Laves phases
Bibliographic record
Abstract
Co itinerant magnetism and the order of the magnetic transition in Er1−xGdxCo2 cubic Laves phases have been studied by magnetic measurements and a first principle density functional theory (DFT) calculation. The saturation magnetization (at 5K), derived from M−1∕H plot with a maximum field of 6T, decreases almost linearly with increasing Gd content. The derived Co magnetic moments, however, remain almost unchanged and range from 1.0to1.1μB∕Co. The first order magnetic transition at TC persists for x⩽0.1, as evidenced by thermomagnetic curves, M(T), and Arrott plots around TC. The total energy, Et, and magnetic moments are calculated as a function of lattice constant, a. In ErCo2, Et(a) shows two minima, corresponding to a low and a high spin state of Co, respectively. The Co sublattice is at a metastable high spin ferromagnetic state in ErCo2, which is responsible for the first order magnetic transition at TC. The replacement of Er by Gd eliminates the double minimum feature of Et(a) and drives the magnetic state of the Co sublattice to a stable state. The DFT calculation successfully explains the change in the order of the magnetic transition when the Gd content is increased in Er1−xGdxCo2.
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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 | 0.000 | 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) | 0.000 | 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 teacher head, 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".