NUCLEAR-MAGNETIC-RESONANCE USING A HIGH-TEMPERATURE SUPERCONDUCTING QUANTUM INTERFERENCE DEVICE

In this letter, we present results of experiments in which nuclear mag netic resonance (NMR) signals were detected using an untuned pickup co il coupled to a high temperature superconductor (HTS) based supercondu cting quantum interference device (SQUID). We were able to operate the HTS SQUID in the presence of static fields of up to 500 Gauss and rad io frequency fields of up to 6 Gauss. The ability of a HTS SQUID to de tect NMR signals opens up the possibility of using a sensitive detecto r for practical applications involving NMR that require a broad detect ion bandwidth. (C) 1997 American Institute of Physics.