1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Thermal effect of heat input on an iron rod - magnetostriction

  1. Mar 15, 2013 #1
    If an iron rod, inside two coils, incurs current going through the coils in the same direction, then the rod will increase in length and then it will begin to reduce in length.

    This is due to the magnetostrictive properties of the iron.

    When the currents oppose each other, so as to cancel, then the thermal properties only can be studied. That is, without the influence of magnetostriction.

    The iron rod would increase in length due to the heat input.

    But will it get to a certain length, then stop? That is, as the heat input continues to rise.

    As the heat input continues to rise, I presume it won't reduce in length?

    Thank you.
  2. jcsd
  3. Mar 17, 2013 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    I had to look it up as this isn't my subject but are you talking about the Villari Reversal Effect?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook