Large Glass-forming Ability and Magnetocaloric Effect in Gd<sub>55</sub>Co<sub>20</sub>Al<sub>23</sub>Si<sub>2</sub>Bulk Metallic Glass
Bibliographic record
Abstract
In this study, we investigated the glass-forming ability (GFA) and magnetocaloric effect (MCE) of <TEX>$Gd_{55}Co_{20}Al_{23}Si_2$</TEX> bulk glassy alloy. It is found that the addition of 2 at% Si is effective for extension of the supercooled liquid region (<TEX>${\Delta}T_x$</TEX>), the <TEX>${\Delta}T_x$</TEX> is 55 K for the <TEX>$Gd_{55}Co_{20}Al_{25}$</TEX> glassy alloy, and increases to 79 K for the <TEX>$Gd_{55}Co_{20}Al_{23}Si_2$</TEX> alloy. As a result, <TEX>$Gd_{55}Co_{20}Al_{23}Si_2$</TEX> glassy alloys with diameters up to 5 mm were successfully synthesized. The alloys also exhibit large MCE, i.e., the magnetic entropy change (<TEX>${\Delta}S_m$</TEX>) of 8.9 J <TEX>$kg^{-1}\;K^{-1}$</TEX>, the full width at half maximum of the <TEX>${\Delta}S_m$</TEX> (<TEX>${\delta}T_{FWHM}$</TEX>) of 87 K, and the refrigerant capacity (RC) of 774 J <TEX>$kg^{-1}$</TEX>.
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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 | 0.005 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.002 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
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".