Thermal stability of SrFeO3/Al2O3 thin films: Transmission electron microscopy study and conductometric sensing response
Bibliographic record
Abstract
The SrFeO3/Al2O3 thin film system has been studied using transmission electron microscopy (TEM). The thin films of SrFeO3 were grown by pulsed laser deposition onto single crystal and sintered polycrystalline Al2O3 substrates at room temperature (RT) and 700 °C and subjected to annealing for various periods of time at 700–1000 °C. TEM characterization showed that the morphology of the film varied with changes of deposition temperature. Films deposited at RT featured a columnar structure and those deposited at 700 °C showed layers with crystalline grains. The interfacial structures of the films remained unchanged below 700 °C. Interfacial reactions were observed following annealing at 850 °C for 5 h. The phase transformation at the interface was characterized for the film annealed at 1000 °C for 5 h, for which the principal phases were identified as SrAl2−xFexO4 and SrFe12−yAlyO19. Evaluation for thin film conductometric sensing applications indicated that the untreated films deposited at 700 °C onto both single crystal and sintered Al2O3 substrates exhibited a p-type gas sensor response to oxygen at 500 °C.
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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 | 0.000 |
| 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) | 0.001 | 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 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".