Revealing the Effects of Trace Oxygen Vacancies on Improper Ferroelectric Manganite with In Situ Biasing
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Bibliographic record
Abstract
Abstract Multiferroic materials, which exhibit multiple orderings, are promising for next generation data‐storage device applications. YMnO 3 , in particular, because of the coexistence of the ferroelectricity and (anti)ferromagnetism within one single material, has drawn special attentions to application‐based research. However, the role of defect chemistry related to the behaviors of the ferroelectric polarization has been seldomly studied due to its complexity. In this work, a novel switching behavior of multiferroic YMnO 3 single crystal is reported using in situ biasing and Landau based numerical calculation. It is revealed that the domain switching only happens at the topmost surface, which can be well explained by the electric field redistribution due to the trace amount of oxygen vacancies. These in situ observations demonstrate that defect chemistry plays an important role in domain switching and can be utilized as an additional parameter for controlling the distribution of electric field within the multiferroic materials.
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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) | 0.001 | 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 it