Dielectric Properties and Ionic Conductivity of Anodic Oxide Films on Tantalum
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Bibliographic record
Abstract
We have investigated certain aspects of the dielectric properties of anodic oxide films on tantalum in connection with Dignam's theory that a special current-driven polarization process is responsible for the transients shown by the ionic current on changing the electric field in the oxide. In his experiments, which were claimed to prove this theory, films were first held at potentials giving fields too low to produce significant ionic current. When voltage pulses were applied large enough to produce fields giving ionic current, extra current was observed to flow for a short time. This was taken as due to the decay of the dielectric polarization built up due to the ionic current, and partial numerical agreement with the model was found. In the present experiments the discharge current flowing after longer periods of voltage application or of ionic current flow was investigated with the aim of finding if more polarization was indeed produced by ionic current flow. The current was not found to be larger after discharge from fields giving ionic current, as required by Dignam's model. It is argued that structural changes in the glassy oxide are responsible for the transients.
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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) | 0.000 | 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) | 0.000 | 0.000 |
Machine scores (provisional)
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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