Magnetic moment of rare-earth elements in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>R</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>Fe</mml:mi><mml:mn>14</mml:mn></mml:msub><mml:mi mathvariant="normal">B</mml:mi></mml:mrow></mml:math> estimated with <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mi>μ</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:mi>SR</mml:mi></mml:mrow></mml:math>
Why this work is in the frame
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Bibliographic record
Abstract
The ferromagnetic (FM) nature of ${\mathrm{Nd}}_{2}{\mathrm{Fe}}_{14}\mathrm{B}$ has been investigated with muon spin rotation and relaxation (${\ensuremath{\mu}}^{+}\mathrm{SR}$) measurements on an aligned, sintered plate-shaped sample. A clear muon spin precession frequency (${f}_{\mathrm{FM}}$) corresponding to the static internal FM field at the muon site showed an order parameter-like temperature dependence and disappeared above around 582 K ($\ensuremath{\sim}{T}_{\mathrm{C}}$). This indicated that the implanted muons are static in the ${\mathrm{Nd}}_{2}{\mathrm{Fe}}_{14}\mathrm{B}$ lattice even at temperatures above around 600 K. Using the muon site and local spin densities predicted by DFT calculations, the ordered Nd moment (${M}_{\mathrm{Nd}}$) was estimated to be 3.31 ${\ensuremath{\mu}}_{\mathrm{B}}$ at 5 K, when both ${\mathbit{M}}_{\mathrm{Fe}}$ and ${\mathbit{M}}_{\mathrm{Nd}}$ are parallel to the $\stackrel{\ifmmode \hat{}\else \^{}\fi{}}{\mathbf{c}}$ axis and ${M}_{\mathrm{Fe}}=2.1\phantom{\rule{0.16em}{0ex}}{\ensuremath{\mu}}_{\mathrm{B}}$. Furthermore, ${M}_{R}$ in ${R}_{2}{\mathrm{Fe}}_{14}\mathrm{B}$ with $R=\mathrm{Y}$, Ce, Pr, Sm, Gd, Tb, Dy, Ho, Er, and Tm was estimated from ${f}_{\ensuremath{\mu}}$ values reported in earlier ${\ensuremath{\mu}}^{+}\mathrm{SR}$ work, using the FM structure proposed by neutron scattering and the same muon site and local spin density as in ${\mathrm{Nd}}_{2}{\mathrm{Fe}}_{14}\mathrm{B}$. Such estimations yielded ${M}_{R}$ values consistent with those obtained by the other methods.
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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 | 0.008 | 0.005 |
| Meta-epidemiology (narrow) | 0.004 | 0.007 |
| Meta-epidemiology (broad) | 0.002 | 0.005 |
| Bibliometrics | 0.002 | 0.004 |
| Science and technology studies | 0.004 | 0.006 |
| Scholarly communication | 0.006 | 0.005 |
| Open science | 0.009 | 0.009 |
| Research integrity | 0.006 | 0.004 |
| Insufficient payload (model declined to judge) | 0.635 | 0.015 |
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