Long‐Range Antiferromagnetic Order on Spin Ladders SrFe<sub>2</sub>S<sub>2</sub>O and SrFe<sub>2</sub>Se<sub>2</sub>O As Probed by Neutron Diffraction and Mössbauer Spectroscopy
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Powder neutron diffraction data on spin ladder compounds SrFe 2 Ch 2 O ( Ch = S, Se) indicate that their magnetic ground states feature long‐range antiferromagnetic spin ordering with k = [0,0,0]. The superexchange interaction is antiferromagnetic across each rung via oxygen but ferromagnetic along the ladders via Ch . At 10 K, the ordered spins point towards the center of the ladders but are faintly canted away from a collinear state. The sizes of the ordered moments are 3.3 and 3.5 µ B Fe –1 for SrFe 2 S 2 O and SrFe 2 Se 2 O, respectively. The polar, heteroleptic, tetrahedral Fe Ch 3 O coordination suggests an angle of 8° between the local structure polarity and the magnetic moment spin orientation. Mössbauer spectroscopic data confirm the magnetic ordering scenario and indicate that the local Fe–O bond rules the electric field gradient at the Fe‐site.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.003 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.002 | 0.002 |
| Open science | 0.002 | 0.001 |
| Research integrity | 0.000 | 0.003 |
| Insufficient payload (model declined to judge) | 0.000 | 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 it