Magnets, permanent superconducting

The discovery of new physical effects in intermetallic compounds, such as intennediate valence, heavy fermions and Kondo systems, coexistence of magnetism and superconductivity, etc., has stimulated much interest in these materials. It is also necessary to mention the powerful permanent magnets based on rare-earth intermetallides. A complex approach to the investigation of the composition, crystal structure and properties of these intermetallic compounds has been outlined and gives the possibility of solving the important problem of the determination of correlations between these characteristics. 

P. A. Luft, A. D. McInturfF, J. A. Reimer, M. Yahnke 2002, (The use of a permanent magnet for water content measurements of wood chips.), IEEE Trans Appl. Superconductivity 12 (1), 975-978. 

FIGURE 10.4 A permanent magnet floating over a superconducting surface. (Courtesy of Darren Peets, UBC Superconductivity Group.)... 

Permanent magnet levitates above superconducting disk cooled in a pool of liquid nitrogen. Redox titrations are crucial in measuring the chemical composition of a superconductor. [Photo courtesy D. Cornelius, Michelson Laboratory, with materials from 1 Vanderah.J... 

FIGURE 3.1 Typical probe geometry in (a) a superconducting magnet and (b) an iron core permanent or electromagnet. Note that the rf coil is fabricated to generate B that is perpendicular to B0. 

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