Frustrated magnetism in the two-dimensional triangular lattice of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mi>Li</mml:mi><mml:mi>x</mml:mi></mml:msub><mml:msub><mml:mi>CoO</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>
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
Magnetism of the simplest layered cobaltite ${\mathrm{Li}}_{x}{\mathrm{CoO}}_{2}$ with $x=1.0$, 0.95, and 0.7 has been investigated by positive muon spin rotation and relaxation $({\ensuremath{\mu}}^{+}\mathrm{SR})$ spectroscopy together with magnetic susceptibility measurements, using polycrystalline samples in the temperature range between 300 and 1.8 K. Weak transverse field ${\ensuremath{\mu}}^{+}\mathrm{SR}$ showed the appearance of magnetism below $\ensuremath{\sim}65\phantom{\rule{0.3em}{0ex}}\mathrm{K}\phantom{\rule{0.3em}{0ex}}(={T}_{c}^{\text{on}})$ for the sample with $x=1.0$. The volume fraction of the magnetic phase at 1.8 K is determined to be $\ensuremath{\sim}20%$ for ${\mathrm{LiCoO}}_{2}$, strongly suggesting that the observed magnetism is not induced by impurities but is an intrinsic behavior. This indicates that either a charge disproportionation $(2{\mathrm{Co}}^{3+}\ensuremath{\rightarrow}{\mathrm{Co}}^{2+}+{\mathrm{Co}}^{4+})$, a spin state transition $({t}_{2g}^{6}\ensuremath{\rightarrow}{t}_{2g}^{5}{e}_{g}^{1})$, or an appearance of magnetic ${\mathrm{Co}}^{3+}$ at surface occurs below 65 K. Zero field ${\ensuremath{\mu}}^{+}\mathrm{SR}$ spectra of ${\mathrm{LiCoO}}_{2}$ consist mainly of a slow relaxing signal due to random fields even at 1.8 K plus a small amount of a fast relaxing signal and an oscillating component, implying the presence of an antiferromagnetic order, as in the case of ${\mathrm{Na}}_{x}{\mathrm{CoO}}_{2}$ with $x\ensuremath{\geqslant}0.75$. For Li-deficient ${\mathrm{Li}}_{x}{\mathrm{CoO}}_{2}$ samples, ${T}_{c}^{\text{on}}$ decreases with decreasing $x$ from 50 K for $x=0.95$ to 25 K for $x=0.7$. The volume fraction of the magnetic phase is however almost independent of $x$ and is estimated as 20% at 1.8 K, but no oscillations were observed in the zero field spectrum.
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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 | 0.002 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.002 |
| Meta-epidemiology (broad) | 0.001 | 0.003 |
| Bibliometrics | 0.000 | 0.002 |
| Science and technology studies | 0.001 | 0.002 |
| Scholarly communication | 0.001 | 0.002 |
| Open science | 0.003 | 0.002 |
| Research integrity | 0.001 | 0.003 |
| Insufficient payload (model declined to judge) | 0.237 | 0.005 |
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