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Dysprosium metal

A rare earth added to magnets so they keep their strength when hot. Almost entirely Chinese, and export-controlled.

The bottleneck itself →

  1. Research40 (Computed: Items per stage = papers, preprints and grants collected for the bottleneck whose relevance score is 2 or more, placed on a stage by the rule in lib/science.ts; judgements are counted separately.)+5 (Computed: Items first collected in the last 7 days whose publication or award date is within the last 30 days.) new
  2. Lab6 (Computed: Items per stage = papers, preprints and grants collected for the bottleneck whose relevance score is 2 or more, placed on a stage by the rule in lib/science.ts; judgements are counted separately.)
  3. Pilot3 (Computed: Items per stage = papers, preprints and grants collected for the bottleneck whose relevance score is 2 or more, placed on a stage by the rule in lib/science.ts; judgements are counted separately.)
  4. Early0 (Computed: Items per stage = papers, preprints and grants collected for the bottleneck whose relevance score is 2 or more, placed on a stage by the rule in lib/science.ts; judgements are counted separately.)
  5. Scale0 (Computed: Items per stage = papers, preprints and grants collected for the bottleneck whose relevance score is 2 or more, placed on a stage by the rule in lib/science.ts; judgements are counted separately.)

judged, with a citation claimed, no citationNumber: papers, preprints and grants the feeds collected — unreviewed

Searched for “dysprosium”, “grain boundary diffusion”, “heavy rare earth free magnet” in titles and abstracts.

49 collected items, newest first ↓Judged by hand ↓Who is active ↓

All stagesFundamental researchApplied / labPilot / demonstrationEarly commercialAt scaleNewestMost cited

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Authors' or awardees' affiliations

Named on a collected paper or grant, matched to the directory by the strict name rule. A company not in the directory, or spelled differently by the source, is not shown here.

Judged by hand

Readiness and substitute status, with reasoning

  • TechnologyEarly commercialreadiness Estimate, not a measurementGrain-boundary diffusion is standard practice and rare-earth-free traction motors are in production; the trade-off is mass and efficiency, not feasibility.By Substrata, open to challenge · 2026-09-15Supporting source →Judgement, cited · 2026-09-15

    Rare-earth-lean and rare-earth-free motors

    Grain-boundary diffusion is standard practice and rare-earth-free traction motors are in production; the trade-off is mass and efficiency, not feasibility.

    Source ↗

Collected by the feeds

Newest first