Nonlinear electromagnetic response of ferromagnetic metals: Magnetoimpedance in microwires
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Bibliographic record
Abstract
Numerical calculations based on simultaneous solution of the Maxwell and Landau–Lifshitz equations were performed, in order to study the voltage response of ferromagnetic conductors carrying ac current. Since no significant approximations are made in the calculations, the model yields both linear and nonlinear giant magnetoimpedance (GMI) behavior and low and high power ferromagnetic resonance. Application to nonlinear GMI in ideal wires, with regions of uniform anisotropy, allows us to understand many aspects of the observed behavior and to predict phenomena such as solitary-wave-like propagation of the magnetization at fairly high current amplitude. Using appropriate magnetic structure, we were able to reproduce, with good agreement, the experimental observations for cobalt rich amorphous microwires. We have also found that even harmonics of GMI signal are very sensitive to the domain structure of the wire, whereas the odd harmonics are not.
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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) | 0.000 | 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 it