1. PERSISTENT MAGNETIZATION OF MgB[sub 2] CYLINDERS INDUCED BY A PULSED FIELD
- Author
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G. Giunchi, E. Perini, T. Cavallin, R. Quarantiello, V. Cavaliere, A. Matrone, J. G. Weisend, John Barclay, Susan Breon, Jonathan Demko, Michael DiPirro, J. Patrick Kelley, Peter Kittel, Arkadiy Klebaner, Al Zeller, Mark Zagarola, Steven Van Sciver, Andrew Rowe, John Pfotenhauer, Tom Peterson, and Jennifer Lock
- Subjects
Superconductivity ,Magnetization ,Materials science ,High-temperature superconductivity ,Condensed matter physics ,law ,Condensed Matter::Superconductivity ,Magnetic separation ,Solenoid ,Cryogenics ,law.invention ,Cylinder (engine) ,Magnetic field - Abstract
High stable trapped fields in bulk superconductors can be useful applied in many electrotechnical applications, as i.e. for motor/generators, for MRI systems or for magnetic separation devices. The HTS bulk materials appear as the matter of choice to this purpose and many attempts have been done on melt textured cuprates tiles, at temperatures up to 77K, applying constant magnetic fields or pulsed magnetization methods. Even if the pulse magnetization is far less effective than the DC magnetization in the trapping capability, it appears as the most friendly technique in practical devices. So we have studied the effects of the pulsed technique, applied to a bulk MgB2 cylinder: a very promising device in view of the feasibility of similar much larger manufacts. To this purpose we have used a copper solenoid to magnetize the MgB2 cylinder, with both cylinder and solenoid conductively cooled by a cryorefrigerator, in the range of temperatures between 5 and 20 K. This simple cryogenic arrangement can be repres...
- Published
- 2008
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