AC conductivity and dielectric analysis of graphite–clay nanocomposite
Bibliographic record
Abstract
A number of graphite–clay composites with varying percentages of graphite in the clay host have been prepared and their AC conductivities and dielectric behaviours have been studied in the frequency range from 42 Hz to 5 MHz. Measurements have been done for various concentrations of graphite filler to characterize their behaviour and develop composites with the desired conductivity for possible practical applications. The AC conductivity, σ(ω), increased with ω and followed a power law σ(ω) ∝ ωs with s ≤ 1, signifying conduction by hopping mechanism. The dielectric behaviour and loss tangents of the samples have been characterized by loss peaks for all of the samples, suggesting the presence of relaxation dipoles. The broad asymmetric loss peaks of the dielectric response were analyzed using the Havriliak–Negami function and associated parameters relaxation time, τ; broadening, γ; and asymmetry, β, have been obtained.
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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 | 0.001 | 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".