Crystallization and Properties of PbO-doped Ba0.7Sr0.3TiO3 Films
Bibliographic record
Abstract
Ferroelectric Ba0.7Sr0.3TiO3 films were fabricated using a PbO-doped barium strontium titanate sol-gel precursor. Ba0.7Sr0.3TiO3 thin films with 0, 10, 20, and 30at.%PbO doping were deposited on bare silicon, and platinum coated silicon substrates, using spin coating. The influence of PbO doping both on the film microstructure and properties was studied. Doping in excess of 20at.%PbO was found to markedly decrease film porosity, while enhancing crystallization by decreasing the annealing temperature required for the formation of the perovskite phase from above 650°C to 500°C. Electrical characterization of the films demonstrated their excellent properties for electronic device application. Films with 20at.%PbO doping had room temperature dielectric constant and dissipation factor of 268 and 0.95%, respectively (measured at 10kHz), with tunability from 30% to 75% and commutation quality factor in excess of 105 (for bias field from 200 to 800kV∕cm). Room temperature leakage current were measured to be as low as 2.45×10−9A∕cm2 (at bias field of 250kV∕cm).
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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".