Film thickness dependence of electrical hysteresis and Hall effect of thermochromic VO2 thin films
Bibliographic record
Abstract
Vanadium dioxide (VO<sub>2</sub>) is a very well-known thermochromic material exhibiting a very effective first order semiconductor to metal (SMT) transition at a temperature of around 68°C. In this work we have investigated the thermochromic properties of VO<sub>2</sub> thin films as a function of film thickness. The VO<sub>2</sub> films were deposited by a two-step method on glass substrates. The changes occurring around the SMT have been systematically characterized by structural, optical, electrical, magnetic studies and their hysteresis cycles. The correlation between film thickness and transition temperature has been established for the VO<sub>2</sub> films from the resistance variation during the heating and cooling cycles. The Hall voltage variation as a function of magnetic field has been measured for each of the VO<sub>2</sub> film thicknesses. These Hall voltage measurements have enabled us to calculate the free electron density above and below the transition temperature for each of the VO<sub>2</sub> samples. The free electron density changes conform to the semiconductor to metal transition observed and to the values mentioned in the literature.
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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) | 0.001 | 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) | 0.001 | 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 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".