Preisach model for systems of interacting superparamagnetic particles
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Bibliographic record
Abstract
We present a model for systems of interacting superparamagnetic particles, based on a generalized version of the Preisach model of hysteresis that incorporates thermal overbarrier relaxation events. The model provides a physically transparent picture of processes like thermal blocking, field cooling (FC), and zero field cooling (ZFC). It is able to replicate the principal structural features of the FC and ZFC response observed in real superparamagnetic assemblies, as well as the systematic variations in this structure with changes in applied field and in the state of aggregation of the particles. The physical origins of these experimental systematics are discussed in terms of the characteristic coercive and interaction fields of the individual subsystems, and their distribution in the Preisach plane.
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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) | 0.002 | 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 it