Two-Dimensional <i>S</i> = 1 Quantum Antiferromagnet (NiCl)Sr<sub>2</sub>Ta<sub>3</sub>O<sub>10</sub>
Bibliographic record
Abstract
A topotactic ion-exchange reaction of a layered perovskite RbSr 2 Ta 3 O 10 with NiCl 2 yielded a novel two-dimensional nickel-oxyhalide (NiCl)Sr 2 Ta 3 O 10, the first S = 1 compound among related series of metal-oxyhalides. The room temperature structure is isostructural with (CuCl)Ca 2 Nb 3 O 10 adopting the space group P 4/ mmm . We found a possible structural transition at 230 K that does not lead to drastic changes in magnetic character such as nickel clustering. Despite a large Weiss temperature of θ = −125 K, magnetic long-range order is significantly suppressed down to T N1 ≈ 50 K because of two-dimensionality and strong frustration. The magnetically ordered state below T N1 has a partial volume fraction coexisting with a paramagnetic component, followed by complete long-range ordering below T N2 = 20 K. The reaction process and requirement will also be discussed.
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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) | 0.001 | 0.001 |
| 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 | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 0.001 |
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".