Superconductivity critical temp. measuring system - useful for high temp. superconductor thin films

摘要

System for measuring the critical temp of superconductive thin films has (i) an emitter coil (4) associated with a receiver coil (6) exposed to the hf magnetic field (B) of the emitter coil, the superconductive thin film (2) between the two coils and at least approximately perpendicular to the magnetic field (B); (ii) an hf generator (5) connected to the emitter coil (4); and (iii) a measuring unit (7) for the voltage induced in the receiver coil (6). USE/ADVANTAGE - Measuring system is useful for high Tc superconductive oxide thin films, eg used as wiring levels in ICs with high electron mobility transistors as inactive elements. It allows low cost, non-destructive determn of critical temps.