Magnetism at Warwick
Our Group's research, examining the magnetic properties of materials, is currently divided into three main themes, Frustrated Magnetism, Low-Dimensional Magnetism, and Permanent Magnetism.
Magnetic Fields and Facilities
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Squid |
Earth's field |
Permanent magnets |
Superconducting magnets |
Hybrid & pulsed magnets |
Destructive magnets |
Magnetars |
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Field (tesla) | 10-18 to 10-16 | 10-5 | 0.1 to 1 | 1 to 25 | 20 to 50 | 102 | 1010 |
In most research laboratories, including ours, electromagnets with iron cores have been replaced with superconducting coils. We have a number of magnetometers and cryo-magnet systems with solenoids that can generate magnetic fields as high as 17 tesla. For experiments that require higher magnetic fields we travel to high magnet-field facilities that offer a range of magnets including resistive, hybrid, superconducting, and pulsed magnet systems, offering field strengths of 50 tesla and above. |
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National High Field Laboratory USA |
European Magnetic Field Laboratory | ||
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Nijmegan HFML | Nicholas Kurti Magnet Laboratory |
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At the other extreme to the very strong fields used in some of our research, we also use the Superconducting Quantum Inference Device (SQuID) in our magnetometers. A SQuID, which in a magnetometer is used as a sensitive current-to-voltage converter, takes advantage of the Josephson effect and is capable of measuring changes of one magnetic fluxon or less. |
Brian Josephson | QD MPMS XL squid magnetometer |