Using bulk superconductors scientists create portable, high-field magnet systems

Superconductors are materials that carry large electrical currents with little or no resistance when cooled below a certain cryogenic temperature. The current carried by a superconductor also generates a magnetic field and a magnetized bulk superconductor— which is similar in appearance to an ice hockey puck— can be used as a super-strength, quasi-permanent magnet, generating fields of several Tesla