Questions for self-controlling

  • What does the "magnetic susceptibility" of a material tell us?
  • How to generate a magnetic field?
  • Why are superconducting coils (so much) limited in maximal fields?
  • Which magnetic fields are/can be generated (a) by the earth, (b) by permanant magnets, (c) by electromagnets, (d) superconducting magnets, (e) non-destructive pulsed field magnets, (f) destructive magnets, (g) neutron stars?
  • Which are the sources of magnetism in materials?
  • What is a demagnetisation field and for which materials it is relevant?

 

  • Explain paramagnetism - its origin, magnitude, field and temperature dependence
  • Explain (Larmor) diamagnetism - its origin, magnitude, field and temperature dependence
  • Explain Van Vleck paramagnetism - its origin, magnitude, field and temperature dependence
  • Sketch magnetic susceptibility of Graphen vs. temperature
  • Sketch M vs B of a paramagnet