Dynamic distortions and polaronic effects in the paramagnetic state of La0.8Ba0.2Mn1−<i>x</i>Al<i>x</i>O3 manganites
Bibliographic record
Abstract
Dynamic distortions and polaronic effects have been investigated in La0.8Ba0.2Mn1–xAlxO3 doped manganites of R3¯c symmetry. We studied the transport and magnetic properties and constructed a phase diagram of this system. We also analyzed the dependence of the transport data on the doping level x. The dependence of the polaron activation energy in the paramagnetic state on x doping was calculated and compared with the available literature data. The results suggest an interplay between a magnetic polaron mediated conductivity which dominates at low x and a bipolaron mediated one which controls electric transport at higher doping. It is suggested that the magnetic polaron formation is responsible for the increased magnetoresistance at low Al doping. Investigation on the nature of the magneto-transport mechanism of such ferromagnetic manganite will be useful in understanding its potential applications at the paramagnetic state.
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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 | 0.000 | 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".