Structural, dielectric, ferroelectric and piezoresponse force microscopy characterizations of bilayered Bi0.9Dy0.1FeO3/K0.5Na0.5NbO3 lead-free multiferroic films
Bibliographic record
Abstract
The structure, dielectric and ferroelectric properties of the bilayered Bi0.9Dy0.1FeO3/K0.5Na0.5NbO3 (BDF/KNN) lead-free thin films deposited on the Pt/TiO2/SiO2/Si substrates by pulsed laser deposition with different thickness ratios have been characterized. It is found that the introduction of the bottom KNN layer can effectively reduce the leakage current of the composite film, allowing the high polarization of the BDF layer to be displayed. The bilayered film with KNN to BDF thickness ratio of 1.2 exhibits the best dielectric and ferroelectric properties, with a remanent polarization 2Pr = 16.3 μC/cm2. The polar domain structure of that film has been imaged by means of piezoresponse force microscopy (PFM) and the switching of the polarization has been realized under an applied electric field of ±12 V, confirming the ferroelectricity in the BDF/KNN composite film.
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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".