Inter- and intratrimer excitations in the multiferroic<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mtext>Ba</mml:mtext></mml:mrow><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mrow><mml:mtext>NbFe</mml:mtext></mml:mrow><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mrow><mml:mtext>Si</mml:mtext></mml:mrow><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mtext>O</mml:mtext><mml:mrow><mml:mn>14</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>
Bibliographic record
Abstract
Elastic and inelastic neutron-scattering experiments have been performed on single crystals of the multiferroic ${\text{Ba}}_{3}{\text{NbFe}}_{3}{\text{Si}}_{2}{\text{O}}_{14}$. It is found that the organization of the spin clusters into true long-range ordered states occurs by the following process: (i) by 60 K, there is evidence for short-range ordered triangular Fe clusters of spins, (ii) below 40 K, the clusters begin to form long-range ordered structures as a spin-wave spectrum develops, (iii) at ${T}_{\text{N}}=26\text{ }\text{K}$, the sample exhibits coexisting long-range and short-range ordered structures, and (iv) by $T=1.5\text{ }\text{K}$, a long-range ordered structure with a well-defined spin-wave spectrum develops. The spin-wave excitation can be described by a Heisenberg Hamiltonian within a distorted triangular lattice including both the intratrimer and intertrimer interactions. Physical property measurements showing anomalies near $T=40\text{ }\text{K}$ can now be adequately explained as being due to scattering from low-energy spin fluctuations.
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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 | 0.011 | 0.011 |
| Meta-epidemiology (narrow) | 0.005 | 0.010 |
| Meta-epidemiology (broad) | 0.002 | 0.009 |
| Bibliometrics | 0.003 | 0.008 |
| Science and technology studies | 0.007 | 0.011 |
| Scholarly communication | 0.009 | 0.008 |
| Open science | 0.013 | 0.010 |
| Research integrity | 0.011 | 0.010 |
| Insufficient payload (model declined to judge) | 0.928 | 0.014 |
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; both teacher heads agree on what is shown here.
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".