SYNTHESIS,MAGNETIC AND TRANSPORT PROPERTIES OF Pr_(0.75)Na_(0.25)Mn_(1-x)Fe_xO_3(0.0≤x≤0.3)
Bibliographic record
Abstract
The single-phase polycrystalline perovskites Pr0.75Na0.25Mn1-xFexO3 (0 ≤ x ≤ 0.30) were prepared for the first time by a sol-gel technique,which offers shorter sintering time and lower temperature to avoid the volatilization of Na and the precipitation of manganese oxide. As a result,the maximum sodium solubility in Pr1-xNaxMnO3 was improved from 0.19 as the literature report to 0.25,and the degree of single-phase was significantly improved. The temperature dependence of magnetization and resistivity of the samples series exhibits that long-range CO is disrupted even for 2% Fe doping level. The magnetization increases and resistivity decreases with increasing Fe doping for x≤0.05,and then both of them vary to opposite tendency with further increasing Fe doping. The effects of Fe doping on Pr0.75Na0.25Mn1-xFexO3 compounds can be analyzed from the competition of two different aspects,namely the geometric effect (size of the dopant) and electronic configurations.
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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".