Effect of calcination atmosphere and Fe3+ content on NiFexAl2-xO4 nano pigments synthesized via a polyacrylamide gel method
Bibliographic record
Abstract
In this research, NiFexAl2-xO4 pigments (x=0, 0.3, 0.7, and 1.5) were synthesized using a polyacrylamide gel method, and the effects of calcination atmosphere and the dopant amount on the formed phases and optical properties were investigated. The obtained pigments' physical, optical, and microstructural properties were clarified using the XRD, UV-Vis spectroscopy, and FESEM techniques. The phase analysis showed that the nickel carbide was formed in the reducing atmosphere instead of the spinel phase. So, the rest of the samples were prepared in an oxidizing atmosphere. The pigments that were obtained had a spherical morphology and a narrow particle size distribution due to the growth inhibitor role of the polyacrylamide network. The iron ions entered both tetrahedral and octahedral sites of the nickel aluminate structure, acted as the main chromophore, and turned the color from cyan to brown. Further addition of iron led to the darkening of the brown color.
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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".