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Bi2Sr2Ca2Cu3O10+δ (Bi-2223) vs MgB2

RANKED BY CRITICAL TEMPERATURE TC AT AMBIENT PRESSURE (KELVIN) #3 VS #6 CHECKED 06 SEPT 2026

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Verdict

Bi2Sr2Ca2Cu3O10+δ (Bi-2223) ranks #3 of 8 on Critical temperature Tc at ambient pressure (kelvin) (110 K); MgB2 ranks #6 (39 K).

Rank 03 of 8 · leads

Bi2Sr2Ca2Cu3O10+δ (Bi-2223)

Critical temperature Tc at ambient pressure (kelvin)

110 K

MakerMaeda group / NRIM

Date1988

Verified04 Sept 2026

Evidence

Maeda, Tanaka, Fukutomi, Asano, Jpn. J. Appl. Phys. 27, L209 (1988): new Bi-Sr-Ca-Cu-O compound with a superconducting onset near 120 K and a bulk 110 K phase later identified as Bi-2223. The 110 K figure is the long-replicated ambient-pressure Tc of the 2223 phase used in silver-sheathed tapes.

Rank 06 of 8

MgB2

Critical temperature Tc at ambient pressure (kelvin)

39 K

MakerAkimitsu group

Date2001

Verified04 Sept 2026

Evidence

Nagamatsu, Nakagawa, Muranaka, Zenitani, Akimitsu, Nature 410, 63–64 (2001): superconductivity at 39 K in magnesium diboride at ambient pressure. Binary intermetallic; widely replicated and used in wires.

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More Bi2Sr2Ca2Cu3O10+δ (Bi-2223) matchups

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

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