[1] It is known that second-order magnetic phase transition, the transition between ferromagnetic (ferrimagnetic) and paramagnetic states of the material at the Curie temperature, is accompanied by a sharp (theoretically infinite) enhancement of the magnetic susceptibility. A second-order magnetic phase transition within the Earth (usually at mid-crustal depths, depending on geothermal conditions and on the type of magnetic material) is assumed to produce extremely high susceptibility zones of a thickness of a few hundreds of meters. Such strongly magnetized zones may be sources of well-known but not-yet explained geomagnetic anomalies, and at the same time, they may produce complicated electrical conductivity anomalies, as well. The second-order magnetic phase transition should be taken into account as one of the possible sources of geomagnetic and magnetotelluric anomalies.
George P. Rédei: Encyclopedic Dictionary of Genetics, Genomics, and Proteomics. 2nd Edition, 1392 pages, A John Wiley and Sons, Inc. Publication, Hoboken, NJ, USA 2003
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.