Curie weiss law for ferromagnetism, Physics

The first question one might ask about ferromagnetic material is the source of the large magnetism. The saturation magnetization is so large virtually all the magnetic dipoles in the ferromagnetic material must be lined up with the field. To make our model fit the facts, it is necessary to add a term to the energy which will make the dipoles all line up. By adding a new energy term we are actually making the same assumptions as Weiss. He was the first to postulate the existence one direction such a field. It states that the field produces at any point by all neighbouring molecules, is propositional to magnetization and acting in the same direction as the intensity of magnetization.

                                     Χm = C/T-Tc

This is curie Weiss law. Here C is a material specific curie constant and critical temperature is the Curie temperature measured in Kelvin. The Curie Weiss law describes the magnetic susceptibility of a ferromagnetic in the paramagnetic region above the Curie point. 

 

 

 

Posted Date: 7/7/2012 8:03:11 AM | Location : United States







Related Discussions:- Curie weiss law for ferromagnetism, Assignment Help, Ask Question on Curie weiss law for ferromagnetism, Get Answer, Expert's Help, Curie weiss law for ferromagnetism Discussions

Write discussion on Curie weiss law for ferromagnetism
Your posts are moderated
Related Questions
Capacitors: When a voltage is applied to a capacitive circuit there is a change in the electric flux. The ease with which this change takes place is a measure of the capacitan

Dispersion and Impure Spectrum: Dispersion : The phenomenon due to which a polychromatic light splits into component colours, when passed through a prism is called 'dispersion

A 1.6 kg man swings from a 2 meter rope at an angle of 45 degrees after swinging 20 degrees past the center point, the rope is cut by a razor. The man goes flying through the air

Presume you are asked to find the characteristics of the image of an actual physical object formed by a single lens and you obtain a negative value for the magnification. What does

A block goes on a wedge which in turns goes on a horizontal table, as given in figure. The wedge angle is Φ. As long as the wedge is in met with table, we have the trivial const

In a transmitter the final stage class C amplified with 18V DC supply calculate what equivalent Road the transistor to an antenna with 50ohm load impedance design and draw an L n

singularity: The center of a black hole, where the curvature of spacetime is maximum. At the singularity, the gravitational tides diverge; no solid object can even theoretical

Define in detail about the test and characteristics of good bricks. Tests for bricks 1. Absorption a brick is taken and it is weighed dry. It is then immersed in water for

how to perform experiment of deflection magnetometer,its concepts

The wedge Make a wedge from a piece of wood and drive it inside a table leg or some other heavy object. View that the wedge is a double inclined plane