LK-99

diamagnetic material, claimed ambient pressure and room-temperature superconductor
Thing chemical_substance Q120919994
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LK-99

Summary

LK-99 is a chemical substance[1]. LK-99 draws 182 Wikipedia views per month (chemical_substance category, ranking #13 of 70).[2]

Key Facts

  • LK-99 is credited with the discovery of Sukbae Lee[3].
  • LK-99 is credited with the discovery of Kim Ji-hoon[4].
  • LK-99's image is recorded as LK-99 pellet.png[5].
  • LK-99's instance of is recorded as chemical substance[6].
  • LK-99's instance of is recorded as inorganic matter[7].
  • LK-99's instance of is recorded as solid[8].
  • LK-99's instance of is recorded as synthetic material[9].
  • Sukbae Lee is named after LK-99[10].
  • Kim Ji-hoon is named after LK-99[11].
  • 1999 is named after LK-99[12].
  • LK-99's made from material is recorded as lanarkite[13].
  • LK-99's location of discovery is recorded as South Korea[14].
  • LK-99's canonical SMILES is recorded as [Pb+2].[Pb+2].[Pb+2].[Pb+2].[Pb+2].[Pb+2].[Pb+2].[Pb+2].[Pb+2].[Cu+2].O=P([O-])([O-])[O-].O=P([O-])([O-])[O-].O=P([O-])([O-])[O-].O=P([O-])([O-])[O-].O=P([O-])([O-])[O-].O=P([O-])([O-])[O-].[O-2][15].
  • LK-99's InChI is recorded as InChI=1S/Cu.6H3O4P.O.9Pb/c;61-5(2,3)4;;;;;;;;;;/h;6(H3,1,2,3,4);;;;;;;;;;/q+2;;;;;;;-2;9*+2/p-18[16].
  • LK-99's InChIKey is recorded as KZSIWLDFTIMUEG-UHFFFAOYSA-A[17].
  • LK-99's chemical formula is recorded as CuO₂₅P₆Pb₉[18].
  • LK-99's Commons category is recorded as LK-99[19].
  • LK-99's color is recorded as dark grey[20].
  • LK-99's crystal system is recorded as hexagonal crystal system[21].
  • LK-99's space group is recorded as space group P6₃/m[22].
  • LK-99's official website is recorded as https://qcentre.co.kr/lk-99[23].
  • LK-99's density is recorded as {'unit': 'Q13147228', 'amount': '+6.699'}[24].
  • LK-99's hashtag is recorded as LK99[25].
  • LK-99's Google Knowledge Graph ID is recorded as /g/11krl2gfw6[26].
  • LK-99's subreddit is recorded as LK99[27].

Body

Works and Contributions

Credited discoveries include Sukbae Lee[3], a researcher[28], b. 1972[29], of South Korea[30] and Kim Ji-hoon[4], a researcher[31], of South Korea[32].

Why It Matters

LK-99 draws 182 Wikipedia views per month (chemical_substance category, ranking #13 of 70).[2] LK-99 has Wikipedia articles in 19 language editions, a strong signal of global cultural recognition.[33] LK-99 is known by 8 alternative names across languages and contexts.[34]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [5] . wikidata.org.
  2. [6] . wikidata.org.
  3. [7] . wikidata.org.
  4. [8] . wikidata.org.
  5. [9] . wikidata.org.
  6. [3] . wikidata.org.
  7. [4] . wikidata.org.
  8. [10] . wikidata.org.
  9. [11] . wikidata.org.
  10. [12] . wikidata.org.
  11. [13] . wikidata.org.
  12. [14] . wikidata.org.
  13. [15] . wikidata.org.
  14. [16] . wikidata.org.
  15. [17] . wikidata.org.
  16. [18] . wikidata.org.
  17. [19] . wikidata.org.
  18. [20] . wikidata.org.
  19. [21] . wikidata.org.
  20. [22] . wikidata.org.
  21. [23] . wikidata.org.
  22. [24] . wikidata.org.
  23. [25] . wikidata.org.
  24. [26] . wikidata.org.
  25. [27] . wikidata.org.

Inline context (facts about related entities)

  1. [28] . Wikidata. wikidata.org. → on this site
  2. [29] . Wikidata. wikidata.org. → on this site
  3. [30] . Wikidata. wikidata.org. → on this site
  4. [31] . Wikidata. wikidata.org. → on this site
  5. [32] . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [33] . Wikidata sitelinks. wikidata.org.
  3. [34] . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). LK-99. Retrieved May 3, 2026, from https://4ort.xyz/entity/lk-99
MLA “LK-99.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/lk-99.
BibTeX @misc{4ortxyz_lk-99_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{LK-99}}, year = {2026}, url = {https://4ort.xyz/entity/lk-99}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): LK-99 — https://4ort.xyz/entity/lk-99 (retrieved 2026-05-03)

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