Bean's critical state model

Calculated magnetization curve for a superconducting slab, based on Bean's model. The superconducting slab is initially at H = 0. Increasing H to critical field H* causes the blue curve; dropping H back to 0 and reversing direction to increase it to -H* causes the green curve; dropping H back to 0 again and increase H to H* causes the orange curve.

Bean's critical state model, introduced by C. P. Bean[1][2] in 1962, gives a macroscopic explanation of the irreversible magnetization behavior (hysteresis) of hard Type-II superconductors.

  1. ^ Bean, C. P. (15 March 1962). "Magnetization of Hard Superconductors". Physical Review Letters. 8 (6). American Physical Society (APS): 250–253. Bibcode:1962PhRvL...8..250B. doi:10.1103/physrevlett.8.250. ISSN 0031-9007.
  2. ^ Bean, Charles P. (1 January 1964). "Magnetization of High-Field Superconductors". Reviews of Modern Physics. 36 (1). American Physical Society (APS): 31–39. Bibcode:1964RvMP...36...31B. doi:10.1103/revmodphys.36.31. ISSN 0034-6861.