Immittance Model of Anodic Dissolution of Ferromagnetic Materials
Bibliographic record
Abstract
Transition elements of d-group (Fe, Co, Ni) and f-group (Gd, Tb, Dy, Ho, Er, Tm), which are ferromagnetic elements, show a spontaneous magnetization. Under their anodic dissolution the magnetization of domains changes. The immitance of the simple model of the anodic dissolution of polycrystalline ferromagnetic materials in a constant magnetic field is presented. Moreover, the expressions describing the impedance and admittance of this model are developed. When alternating current flows through a ferromagnetic material with a magnetization different from zero, there must be appearance of Emf of electromagnetic self-induction E [1]: E = - dΨ/dt (1) where Ψ is magnetic flux-linkage and t is time. The magnetic flux-linkage can be determined from the following equation [2]: Ψ = -μo∫(H·M)dv/I (2) where I is the current in ferromagnetic; H is intensity of the external magnetic field; M is magnetization of the ferromagnetic; μo is magnetic constant. The integration is carried out over the whole volume of the ferromagnetic material v. From equation (2) it can be seen that in constant external magnetic field, H = const, the magnetic flux-linkage is a function of current and magnetization only: Ψ = Ψ(I,M) (3) Then in the linear approximation, for the complete differential Ψ , we obtain: dΨ = (∂ Ψ/ ∂ I)MdI+ (∂ Ψ/ ∂ M)IdM (4) After substituting expression (4) to equation (1) we get: E = - dΨ/dt= (∂ Ψ/ ∂ I)MdI/dt+(∂ Ψ/ ∂ M)IdM/dt (5) By definition, (∂ Ψ/ ∂ I) M is nothing else but inductance of ferromagnetic L[1]: L = d Ψ/ d I (6) The ferromagnetic magnetization is the sum of magnetic moments of the atoms. Therefore, change in the magnetization of a ferromagnetic, associated with the transition of metal ions into electrolyte solution under anodic polarization equals to: dM = kMBNAdn (7) where MB = eh/(4πme) is Bohr magneton [1]; kMB
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.002 |
| Open science | 0.004 | 0.001 |
| Research integrity | 0.002 | 0.001 |
| Insufficient payload (model declined to judge) | 0.007 | 0.001 |
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".