Evaluation of the Structure and Electrical Transport Properties of Doped CeO<sub>2</sub>
Bibliographic record
Abstract
In this paper, we report the structure, chemical stability and electrical conductivity of Mn, Mo and Y or Sm-codoped CeO2. Ce0.9-xY0.1MnxO2-δ (x = 5-15%) (CYMO) were prepared by solid state reactions and co-precipitation at elevated temperatures. Powder X-ray diffraction patterns showed that the samples prepared through wet chemistry route were single-phase fluorite structure over the entire concentration ranges of Mn. However, Mn3O4 was detected in solid state method synthesised CYMO. Among the CYMO investigated in the present work, Ce0.8Y0.1Mn0.1O2-δ showed the highest total electrical conductivity of 6.1 x 10-3 Scm-1 and 1.5 x 10-2 Scm-1 at 700 οC in air and H2, respectively. Mo and Y or Sm-codoped CeO2 were found to be stable in 30 ppm H2S in H2 at 600 oC for 12 h, and found to form a single-phase solid solution at elevated temperatures with Y-doped ZrO2 (YSZ) in air.
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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) | 0.000 | 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 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".