Spectroscopic and magnetic properties of colloidal transition metal-doped transparent conducting oxide nanocrystals as building blocks for spintronic materials
Bibliographic record
Abstract
The synthesis of colloidal Cr<sup>3+</sup>-doped In<sub>2</sub>O<sub>3</sub> NCs with the body-centered cubic bixbyte-type crystal structure, and Cr<sup>3+</sup>-doped SnO<sub>2</sub> NCs with the rutile crystal structure was described. Ligand-field electronic absorption spectroscopy suggests that Cr<sup>3+</sup> dopants have quasi-octahedral coordination in both In<sub>2</sub>O<sub>3</sub> and SnO<sub>2</sub> NC host lattices. Unlike free-standing nanocrystals, the nanocrystalline films fabricated from colloidal Cr<sup>3+</sup>-doped In<sub>2</sub>O<sub>3</sub> and SnO<sub>2</sub> nanocrystals exhibit room temperature ferromagnetism. Analogous magnetic behavior suggests the same origin of ferromagnetic ordering in both materials. The observed ferromagnetism has been related to the existence of extended structural defects, formed at the interfaces between nanocrystals in nanocrystalline films. These structural defects are likely responsible for the formation of charge carriers which mediate the dopant magnetic moment ordering.
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How this classification was reachedexpand
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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 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)
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 teacher head, 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".