Active standard | Published: 28/04/2021

IEC 61788-17-ed.2.0

Superconductivity - Part 17: Electronic characteristic measurements - Local critical current density and its distribution in large-area superconducting films
(Supraconductivite - Partie 17: Mesurages de caracteristiques electroniques - Densite de courant critique local et sa distribution dans les films supraconducteurs de grande surface)

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Detail information

Designation: IEC 61788-17-ed.2.0

Publication date: 28/04/2021

Pages: 41

Country: International technical standard

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Anotation

IEC 61788-17:2021 specifies the measurements of the local critical current density (Jc) and its distribution in large-area high-temperature superconducting (HTS) films by an inductive method using third-harmonic voltages. The most important consideration for precise measurements is to determine Jc at liquid nitrogen temperatures by an electric-field criterion and obtain current-voltage characteristics from its frequency dependence. Although it is possible to measure Jc in applied DC magnetic fields [20] [21], the scope of this document is limited to the measurement without DC magnetic fields. This technique intrinsically measures the critical sheet current that is the product of Jc and the film thickness d. The range and measurement resolution for Jcd of HTS films are as follows. - Jcd: from 200 A/m to 32 kA/m (based on results, not limitation). - Measurement resolution: 100 A/m (based on results, not limitation).

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