Compare · Superconductors
Tl2Ba2Ca2Cu3O10 (Tl-2223) vs SmFeAsO1−xFx
RANKED BY CRITICAL TEMPERATURE TC AT AMBIENT PRESSURE (KELVIN)
#2 VS #5
CHECKED 06 SEPT 2026
Side by side
Verdict
Tl2Ba2Ca2Cu3O10 (Tl-2223) ranks #2 of 8 on Critical temperature Tc at ambient pressure (kelvin) (125 K); SmFeAsO1−xFx ranks #5 (55 K).
Rank 02 of 8 · leads
Critical temperature Tc at ambient pressure (kelvin)
125 K
MakerParkin / IBM Almaden
Date1988
Verified04 Sept 2026
Evidence
Parkin, Lee, Engler, Nazzal, Huang, Gorman, Savoy, Beyers, Phys. Rev. Lett. 60, 2539 (1988): "Bulk superconductivity is reported in Tl2Ca2Ba2Cu3Ox with a transition to zero resistance at ≃125 K, the highest transition temperature (Tc) yet found." Widely replicated ambient-pressure cuprate; Tc 118–125 K depending on intergrowths.Rank 05 of 8
Critical temperature Tc at ambient pressure (kelvin)
55 K
MakerRen / Zhao group
Date2008
Verified04 Sept 2026
Evidence
Ren, Che, Dong, Yang, Dai, Fang, Zhong, Chen, Wang, Sun, Wen, Xu, Zhao, Chin. Phys. Lett. 25, 2215 (2008): fluorine-doped samarium iron arsenide with Tc up to 55 K at ambient pressure. Highest well-replicated 1111-family iron-pnictide Tc; Kamihara et al. JACS 2008 LaFeAsO:F at 26 K is the parent discovery and is not listed separately.Try another pair
Source Peer-reviewed papers: Nature 365, 323 (1993); Phys. Rev. Lett. 60, 2539 (1988); Jpn. J. Appl. Phys. 27, L209 (1988); Chin. Phys. Lett. 25,…
Last checked 06 Sept 2026