A Preisach analysis of a reentrant ferromagnet Fe0.65Ni0.23Cr0.12
Bibliographic record
Abstract
Measurements of the initial magnetizing curve, the magnetizing remanence, the descending branch of the major hysteresis loop, and the demagnetizing remanence have been performed on a reentrant ferromagnet Fe0.65Ni0.23Cr0.12, at several temperatures in the vicinity of the postulated ferromagnetic-spin glass “reentrant transition.” Henkel plots of the principal magnetizing and demagnetizing remanences show a systematic change in curvature with temperature, from a “high temperature” regime T⩾8 K where the curvature is predominantly magnetizing-like to a “low temperature” regime T⩽6 K where the curvature is purely demagnetizing-like. Numerical simulations based on a Preisach model which includes thermal fluctuations show that this behavior is consistent with a physical picture of coupled bistable subsystems with a temperature dependent distribution of interaction fields, which evolves with decreasing temperature from a regime dominated by long range ferromagnetic interactions to a regime in which the interaction fields fluctuate randomly about a zero mean.
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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) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| 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) | 0.001 | 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 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".