Polarization dynamics in ferroelectric thin films
Why this work is in the frame
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Bibliographic record
Abstract
The remanent polarization at zero electric field and the capability of being switched between multiple stable states make ferroelectric materials good candidates for non-volatile memories. Practically, ferroelectric materials are commercially available and have been applied to ferroelectric random-access memories (FeRAM) for computers and radio frequency identification (RFID) cards.\nFor application in data storage, three factors are crucial: (i) a fast writing/reading speed, (ii) a reliable data retention, and (iii) a slow degradation during a large number of writing/reading cycles. These challenges have attracted a wide research interest from both industry and academia, since they are not only of practical interests but trigger intriguing fundamental questions related to the ferroelectric materials as well. \nIt is the major scope of this thesis to study the polarization-related device physics motivated by the aforementioned practical requirements. We focus on thin films of the ferroelectric polymer poly-vinylidene-fluoride (PVDF) and its random copolymers with trifluoroethylene [P(VDF-TrFE)]. We shall show that the conclusions derived also apply to inorganic ferroelectric materials such as Pb(Zr,Ti)O3, and BaTiO3. Our investigation is based on macroscopic electrical measurements and nanoscale scanning probe measurements. Modeling at mesoscopic level is involved.
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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 | 0.002 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.003 | 0.003 |
| Open science | 0.005 | 0.001 |
| 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