Note 1 to entry: If a material is non-uniform or anisotropic, $J_{\text{cm}}$ differs from the transport critical current density, $J_{\mathrm{ct}}$.

Note 2 to entry:  $J_{\text{cm}}$ takes sometimes smaller values than $J_{\mathrm{ct}}$ because of the different electric field strength caused by the flux creep, especially for high-temperature superconductors.

Note 3 to entry: This entry was numbered 815-12-09 in IEC 60050-815:2015.