Inhomogeneous magnetization processes in electrodeposited iron thin films on GaAs
Bibliographic record
Abstract
Electrodeposited thin films of Fe on GaAs with (100), (110), and (111) orientation are composed of quasisingle crystalline mosaic nanoregions, probably because of defects arising from the coalescence of separately nucleated epitaxial regions. The epitaxy is promoted by the use of an ammonium sulfate electrolyte buffer and a substrate oxide etch in dilute ammonium hydroxide. Samples with these different orientations have been studied using x rays, transmission electron microscopy, and magnetization measurements. The observations of magnetic hysteresis with minor loops that extend outside the major loop are among the interesting features of the electrodeposited films. The major hysteresis loops do not correspond to models with uniform rotation plus domain wall motion. The evident uniaxial anisotropy preferring the ⟨100⟩ axes does not explain the results unless it is added inhomogenously into the modeling. For the (11̱0) substrates, the inhomogeneous distribution of uniaxial anisotropy generates patterns of magnetization in which the directions of magnetization pass through the in-plane [111] magnetic hard axis when the field is applied along the intermediate in-plane [110] axis. This suppresses the large hysteresis that would accompany models in which there is uniform rotation of the magnetization through the [111] direction because of the confinement of the magnetization to the plane of the thin films. The results have been fit to analytic models and to micromagnetic simulations. We speculate that the uniaxial anisotropy arises from the regions of coalescence of the islands of nucleation or perhaps from a density of bulk twins.
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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".