Why does a cylindrical permanent magnet rotate when levitated above a superconducting plate?

American Journal of Physics

Volumn 72, Issue 2, 2004, Pages 243-248

  Schreiner, Michael ^a   Palmy, Claudio ^a  

^a Landscape Architecture   (Switzerland)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 1042268234     PISSN: 00029505     EISSN: None     Source Type: Journal    
DOI: 10.1119/1.1604385     Document Type: Article

References (12)

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2. F. Hellmann, E. M. Gyorgy, D. W. Johnson, H. M. O'Bryan, and R. C. Sherwood, "Levitation of a magnet over a flat type II superconductor, " J. Appl. Phys. 63, 447-450 (1988).
3. C. Palmy and F. Fuellemann, "Thermal induced rotation of a levitated permanent magnet above a superconducting disk," Helv. Phys. Acta 63 (6), 805-806 (1990).
4. G. Martini, A. Rivetti, and F. Pavese, "A self rotating magnet levitation above a YBCO specimen," Adv. Cryog. Eng, 35, 639-646 (1990).
5. F. Moon, Superconducting Levitation (Wiley, New York, 1994).
6. K. Ma, J. Liu, C. McMichael, R. Bruce, D. Mims, and W. K. Chu, "Spontaneous and persistent rotation of cylindrical magnets levitated by Y-Ba-Cu-O superconductors," J. Appl. Phys. 70 (7), 3961-3963 (1991).
7. C. Kittel, Introduction to Solid State Physics (Wiley, New York, 1996).
8. F. P. Incropera and D. P. DeWitt, Fundamentals of Heat and Mass Transfer (Wiley, New York, 1996).
9. F. Moon, Magneto-Solid Mechanics (Wiley, New York, 1984).
10. O. C. Zienkiewicz and R. L. Taylor, The Finite Element Method (McGraw-Hill, London, 1989), 4th ed., Vol. 1.
11. For more information, see 〈http://www.femlab.com〉.
12. M. Schreiner, "The dynamics of a levitated cylindrical permanent magnet above a superconductor," Revista Mathematica Complutense (accepted for publication).