Curie temperature Definition and 13 Threads

Tim from the Grand Illusions channel on YouTube brings you another interesting scientific toy. This time it's a Curie Point Magnetic Heat Engine!

Hello everyone,I would like to open a debate on the possibility of designing permanent magnets whose Curie temperature (Tc) is as close as possible to room temperature, without compromising the intensity of the magnetic field. The goal is to find an optimal balance between a ‘low’ Tc and...

Is the curie temperature of a ferromagnetic material constant? Are there any factors that will raise it or lower it? For instance, what happens if my piece of iron is already in a strong magnetic field? Is the curie temperate higher, then?

Hello, I wanted to know, if someone knows of a realistic option of, how to cut barrium ferrite magnets without using a rock saw and without demagnetizing the magnet obviously? Thanks in advance everyone.

Can a Neodymium magnet get back it's magnetic properties after being demangnetized? Say that there is a Neodymium magnet(Nd-Fe-B) that has been demagnetized(turned paramagnetic) at a temperature higher than its curie temperature. If I extract the demagnetized Neodymium(Nd) from the...

Homework Statement (a) Show the curie-weiss behaviour. (b) Estimate ##\lambda## and ##B_e## and exchange energy.[/B] Homework EquationsThe Attempt at a Solution Part(a) Since even when applied field is zero, ##B_{total} \neq 0## which gives rise to ##M\neq 0##. This is a fundamental...

Homework Statement Part(a): Derive susceptibility Part(b): Find field experienced by neighbour. Part(c): State temperature range. What explains temperature dependence beyond curie temperature? Why is curie temperature so high? Part(d): In practice, measured magnetic moment is far lower than...

For a module I recently ran a computer simulation to determine the temperature at which a material underwent a ferromagnetic to paramagnetic phase transition. However, I'm not really sure what the applications are of knowing this are. Obviously if you wanted the material to retain its permanent...

I don't think I've fully grasped the underlying ideas of this class, so at the moment I'm just sort of flailing for equations to plug stuff into... Homework Statement Show that in the mean field model, M is proportional to H1/3 at T=Tc and that at H=0, M is proportional to (Tc - T)1/2...

Hello guys, first post in this forum :) Magnetism has always been complicated to understand for me, and I would like some help regarding Curie temperatures. We have just bought a new measurement equipment to out lab which shall be temperature calibrated with curiepoints. We have three...

Hi all, I'm preparing a talk about Curie Temperature, and looking for some Ms(T) graphs in the web I've found some of them in which the magnetization is not zero when T > Tc, (the dramatic change is obversable, so it is the Tc). But for T > Tc I expect complete disorder and no domains, then...

I was wondering how to we determine the Curie Temperature of a ferromagnet? I know an experiment can give us the critical point, but what about the changes in the lattice of each substance changes curie temperature? I do know it depends on the coordination number(number of neighbors). My teacher...

Anyone has Matt Mcmohan's Labview program on measuring curie temparature. I here its free . but i cannot find it on the net