Surface preparation and the evolution of atomically flat step terrace morphology of MgO single crystals
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Bibliographic record
Abstract
We present a preparation method of vicinal stepped MgO (100) substrate surfaces, a prerequisite for high quality thin film growth. Through atomic force microscopy measurements, the surface morphology evolution of (100)-oriented MgO as a function of the annealing conditions is investigated. In particular, we discuss the effect of temperature, time and ambient atmosphere on the evolution of the MgO surface arrangement. At annealing temperature of 1000°C for 40 min, MgO surface morphology displays an atomically flat, single terminated surface with (100)-oriented, sharp terraces and equidistant steps equal to half of the MgO lattice parameter. Longer annealing leads to the formation of bunched terraces with large step heights of 1-5nm. The optimized recipe developed here efficiently removes surface adsorbates, namely hydroxyl and carbonate groups and restores the terraces on the surface.
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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 | 0.001 |
| 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