Go Back   Physics Help Forum > High School and Pre-University Physics Help > Electricity and Magnetism

Electricity and Magnetism Electricity and Magnetism Physics Help Forum

LinkBack Thread Tools Display Modes
Old Oct 17th 2017, 12:55 PM   #1
Junior Member
Join Date: Oct 2017
Posts: 1
Magnetic flux density and temperature

Hello everyone!

I am new in the forum; and I am currently studying physics at the high school level. I have a little problem... and I would greatly appreciate any help that you could provide me;

The thing is; I have to do an investigation on the relationship between magnetic flux density and temperature. My hypothesis is that when a ferromagnet is heated, the magnitude of B should decrease. However, I can't seem to find any formula which relates magnetic flux density and temperature, at least below the Curie point (?). Is there a formula relating these? Thank you very much!
Tufon is offline   Reply With Quote
Old Oct 20th 2017, 05:14 PM   #2
Senior Member
Woody's Avatar
Join Date: Jun 2016
Location: England
Posts: 394
Just Guessing.

I was hoping someone else would post an answer to this,
because I don't know the answer and the question intrigues me.

Your hypothesis seems reasonable, many properties (conductivity as an obvious example) change with temperature, but I have not heard of any change in magnetism with temperature (below the Curie point).
But then there are many things I have not heard of...

I have a suspicion that you might find a small change due to the interfering influence of impurities in the material becoming more pronounced at higher temperatures.
In particular, as the Curie point of the bulk material is approached, some regions of the material (where the composition is slightly different from the average) might reach the Curie point at a lower temperature than the rest.

I might hypothesise that a very pure single crystal would show no discernible change up to a very sharp Curie change, while a less pure alloy might show small, but detectable, changes up to a more gradual Curie change.

However this is all just pure guesswork.
Woody is offline   Reply With Quote

  Physics Help Forum > High School and Pre-University Physics Help > Electricity and Magnetism

density, flux, magnetic, temperature

Thread Tools
Display Modes

Similar Physics Forum Discussions
Thread Thread Starter Forum Replies Last Post
Magnetic flux density and susceptibility Veerendra Advanced Electricity and Magnetism 2 Sep 15th 2017 10:04 AM
Relating a local magnetic permeability value with a local remanent flux density dorque Advanced Electricity and Magnetism 0 Jan 28th 2015 12:27 PM
Magnetic Flux Question citcat Electricity and Magnetism 1 Apr 7th 2013 05:52 PM
magnetic flux alex83 Electricity and Magnetism 1 Dec 16th 2009 07:34 PM
Magnetic Flux Density Fairydust07 Electricity and Magnetism 0 Apr 22nd 2009 07:14 AM

Facebook Twitter Google+ RSS Feed