GB/T 45116-2024 Critical current measurement—DC critical current of REBCO composite superconductors
GB/T 45116-2024 Critical current measurement—DC critical current of REBCO composite superconductors
Basic Information
Scope
This document describes the measurement method for the direct-current critical current of RE-Ba-Cu-O (REBCO, RE = rare earth) composite superconductors in short straight strips, and provides the allowable deviations and other specific limitations in the usual measurement.
This document is applicable to samples with a length of no more than 300 mm and a rectangular cross-sectional area of 0.03 mm 2 to 7.2 mm 2, equivalent to a width of 1.0 mm to 12.0 mm and a thickness of 0.03 mm to 0.6 mm of composite superconductors. The Ic of the composite superconductors in the standard measurement environment is no more than 300 A, and the n-value is greater than 5.
Note: The standard measurement environment refers to the process of measuring the sample immersed in liquid nitrogen without an external magnetic field.