MgB2 SQUID for Magnetocardiography

摘要: The discovery of the superconductivity at a transition temperature (TC) 39 K in magnesium diboride (MgB2) has attracted much attention from many researchers for scientific as well technical reasons [1]. Compared with Cu-based superconductors (cuprates), MgB2 lower anisotropy and larger coherence length, addition to high Tc [2]. These characteristics give rise new applications superconductor devices that can operate range between 20 30 K; examples such are Josephson junctions integrated circuits. This be easily achieved by using economical compact cryocoolers or liquid hydrogen. use may transform being specialized advanced technology into common usage consumer devices. In future, hydrogen gas widely used carbon-free power generation fuel cells. Liquid would available these purposes, utilized cooling low-temperature addition, is considered clean superconducting material, neither toxic nor rare earth elements.