Temperature dependence of electrical conductivity and dielectric properties in Li–Mn ferrite
Bibliographic record
Abstract
Manganese substituted lithium–ferrite with the general formula Li0.5–0.5xMnxFe2.5–0.5xO4 (where x = 0.0, 0.1, 0.3, 0.5, 0.7, 0.9, and 1.0) were synthesized by the standard ceramic technique. The variation of DC and AC conductivities has been reported as a function of temperature from room temperature (293 K) up to 970 K in static air. AC measurements were carried out over a wide range of frequencies from 100 Hz up to 1 MHz. The variation ln σ at room temperature with composition indicates that the conductivity initially increases up to 0.5 and then decreases with further addition in Mn content. The activation energy of the conduction mechanism decreases from 0.68 to 0.34 eV. The electrical conductivity in the present ferrite is explained on the basis of the hopping mechanism. Dielectric properties, such as dielectric loss tangent, tanδ, and dielectric constant, ε′, have been measured. The dielectric behavior is explained by using the mechanism of the polarization process.
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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 | 0.001 |
| 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) | 0.001 | 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".