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 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 | 0.001 | 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 teacher head, 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".