Ferromagnetic Definition and 63 Threads

"Amorphous Ferromagnetic Metallic Alloys" Hello all, In a project in which I'm looking to endeavor, I have a need for a material with high magnetic permeability and high electrical resistivity. In beginning my research, I came across this in Wikipedia: "One can also make amorphous...

Can anyone help me understand why magnetic flux flows through ferromagnetic materials like an iron ring? Also, say you have a toroid with a wire wrapped around it (in air) how can you say that the flux that goes through one "loop" will go through ALL the others? These are just some things...

Can the wire windings in an electric motor be ferromagnetic and still operate? Why?

Homework Statement Near the critical point, Gibbs free energy of a ferromagnetic system can be written as (1). a)Using the definition of magnetization, (2), show that m(t,H=0) = Bt^{\beta} B is a constant. Determine \beta in relation to \alpha and \Delta b) Show that the...

I'm wondering about general magnetic forces, specifically the behavior of unmagnetized ferromagnetic materials in a magnetic field. I.e., a simple bar or electromagnet picking up an unmagnetized piece of iron. Are there formulas to explain this behavior? The lorenz force equations by...

Hi everybody, I have faced with a problem in my report. The question said that "How can ferromagnetic effect change to depend on particle/grain size(at nm (10, 50, 100, 1000...) and at \mum (0.5, 1, 2...)?" (In shortly, what can we observe at feromagnetic effect if we increase and decrease of...

once a ferromagnetic material is magnetized, does it ever go back to it's original "randome magnetic moment" state?

Homework Statement It's a past paper question, but I just don't understand it. I must have missed something here... Homework Equations Maxwell's equations, \frac{B}{\mu_{0}} = H + M, M=\chi H change in stored energy = H.dB The Attempt at a Solution (a) \nabla\times H =...

a- I place a ferromagnetic dipole in a uniform magnetic field so that the axis of the dipole moment vector does not lie parallel to the magnetic field lines. Is there a net force on the dipole? Is there a net force? b- I place a ferromagnetic dipole in a uniform magnetic field so that the axis...

Here's the situation: We have a ruler, inclined slightly with a strong ceramic magnet at the end. Now, we put two identical ferromagnetic (steel, for example) balls on the top of the ramp, touching each other. We let the balls roll down the ramp, and, perhaps against intuition, the balls...

What is the difference between paramagnetic materials and their behaviour in magnetic fields?? Thanks a lot for the help...having a magnetism test 2 days from now:frown:

for a ferromagnetic metal, the there will be splitting of energy band(one for spin up e- and one for spin down e-) under the influence of external magnetic field. the it is known as exchange splitting. here are my questions 1. what determine the degree of splitting? i guess it depends on the...

Can a single atom of a ferromagnetic material display properties of ferromagnetism? In other words, is an iron atom affected by magnetic fields the same way a chunk of iron is? In other other words, does a single atom of a ferromagnetic material still have a net magnetic dipole moment, or is...