Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Ferromagnetism phenomenon

  1. Nov 25, 2003 #1
    When a magnetic field is applied to a diamagnetic, the dipoles align opposite to the direction of the magnetic field. However, when a magnetic field is applied to a paramagnetic, the dipoles align to the same direction of the magnetic field.

    My professor mentioned in class that the phenomenon of diamagnetic and paramagnetic dipole alignment is unexplained and challenged us to find some sort of factual backing for our explanation. I am asking for help, for guidance, for any ideas on this phenomenon.

    Any suggestions?
  2. jcsd
  3. Nov 25, 2003 #2
    When an external field is applied to a diamagnetic substance, screening currents occur to oppose the external field; that is why the induced "dipoles" align opposite to the applied field. Paramagnetic behavior is due to permanent dipoles aligning to the field, reducing the total energy.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook