<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">Fe</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>electron paramagnetic resonance study of a<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">YCaAlO</mml:mi></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>single crystal: Study of substitutional disorder
Bibliographic record
Abstract
$X(\ensuremath{\sim}9.7\mathrm{GHz})$ and $Q(\ensuremath{\sim}35.6)$ band EPR measurements on a single crystal of ${\mathrm{Fe}}^{3+}$ -doped ${\mathrm{YCaAlO}}_{4}$ are performed to investigate the effect of substitutional disorder upon introduction of ${\mathrm{Fe}}^{3+}$ ions in this crystal. A model is proposed which takes into account the distribution of the orientations of the magnetic z axes of the various ${\mathrm{Fe}}^{3+}$ ions in a Gaussian manner about the c axis of the crystal, accounting satisfactorily for the observed angular variation of the ${\mathrm{Fe}}^{3+}$ EPR linewidth due to substitutional disorder. The parameters of this model serve to characterize the disorder. In addition, the ${\mathrm{Fe}}^{3+}$ spin Hamilton parameters were estimated from EPR line positions at 4.2, 77, and 295 K. In particular, the ${\mathrm{Fe}}^{3+}$ zero-field splitting parameter ${b}_{2}^{0}$ was found to have a rather large value, of \ensuremath{\sim}35 GHz for an inorganic host crystal.
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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 | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.002 | 0.003 |
| Science and technology studies | 0.002 | 0.000 |
| Scholarly communication | 0.004 | 0.003 |
| Open science | 0.003 | 0.001 |
| Research integrity | 0.002 | 0.002 |
| Insufficient payload (model declined to judge) | 0.536 | 0.390 |
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".