MAGNETISM OF SUPERCONDUCTORS. The currents shield the body of the superconductor from external magnetic fields; therefore, in a massive superconductor the magnetic field is equal to https://datingranking.net/escort-directory/west-jordan/ zero when T < Tc (the Meissner effect).
int » ?B or ˆint » kT). FERROMAGNETISM. ex > 0): crystals of iron, cobalt, and nickel and a number of rare earths (gadolinium, terbium, dysprosium, holmium, erbium, thulium, and ytterbium) and alloys and compounds of these elements, as well as alloys of chromium and manganese and compounds of uranium. Spontaneous magnetization at temperatures below the Curie point ? is characteristic of ferromagnetism, and when T > ? ferromagnets pass into the paramagnetic or antiferromagnetic state (the latter case is observed, for example, in some rare earths). (more…)