Enhanced coercivity of spark plasma sintered (La,Ce)FeB magnets
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
The increasing global demand on Nd-Fe-B makes rare earth (Re) elements including Nd, and Tb facing long-term criticality due to resource limitation and price, it is important to develop new Re-Fe-B magnets with high content of light rare earths (LRe) such as La and Ce which are more abundant and cheaper. However, large amounts exceeds 40 wt.% of La/Ce substitutions for Nd or Pr worse the properties. In addition, the nonmagnetic CeFe <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> phase, which coexists with the main 2:14:1 phase, lowers the intrinsic magnetic properties of La/Ce-FeB. It is reported that the substitution of La for Ce can inhibit the formation of CeFe <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> and improve the magnetic properties of CeFeB magnets. In this study, we prepared a series of (La/Ce)FeB ribbons and investigated the effect of La content on the structure and magnetic properties. Based on the optimized (La/Ce)FeB ribbon, spark plasma sintered (SPS) nanocrystalline bulks with high density were fabricated, and (La/Ce)FeB magnets with NdCu additions, to improve the coercivity, were also investigated.
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 | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.004 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.011 | 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