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MgB2 vs Nb3Ge

RANKED BY CRITICAL TEMPERATURE TC AT AMBIENT PRESSURE (KELVIN) #6 VS #7 CHECKED 06 SEPT 2026

Side by side

Verdict

MgB2 ranks #6 of 8 on Critical temperature Tc at ambient pressure (kelvin) (39 K); Nb3Ge ranks #7 (23.2 K).

Rank 06 of 8 · leads

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.

Rank 07 of 8

Nb3Ge

Critical temperature Tc at ambient pressure (kelvin)

23.2 K

MakerGavaler / Westinghouse

Date1973

Verified04 Sept 2026

Evidence

Gavaler, Appl. Phys. Lett. 23, 480 (1973): sputtered Nb3Ge films with an onset near 23 K; subsequent work locked the ambient-pressure A15 record at 23.2 K. Held the record from 1973 until the cuprates. Replicated A15 intermetallic.

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More MgB2 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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