Hypothetical mid-crustal models of second-order magnetic phase transition

摘要: According to theoretical considerations and recent physical experiments, the so-called second-order magnetic phase transition may accompany with a very sharp enhancement of susceptibility. On basis geomagnetic, geothermic, magnetotelluric considerations, Kiss et al. (2005) suggested this between ferromagnetic/ferrimagnetic paramagnetic states material at Curie/Neel temperature occurring in Earth’s crust mid-crustal depths. Since then several pro contra arguments have emerged. Here we present modelling results, discuss some new ideas about thickness permeability critical layer. We conclude that possible models due are elongated: linear or curved bodies (thin thicker plates) finite length just Curie depth.