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Energy required to magnetize soft iron?

  1. Oct 29, 2013 #1
    Out of all the formula's I studied, I could not figure out how much energy is required to magnetize soft iron ferromagnetic material that has a small hysteresis loop(Due to the low coercive force)...
    How can I figure this out?

    Also magnetization energy = demagnetization energy correct?

  2. jcsd
  3. Oct 31, 2013 #2
    Maybe I can figure it out from the torque applied on each moment in the material and know the magnetization energy?
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