Sunday, 2 September 2012

Langevin Theory of Diamagnetism, Langevin Theory, Langevin's Magnetism


Diamagnetic substances are those which placed in an external magnetic field become weekly magnetized in a direction opposite to the magnetic field direction. So, Diamagnetic material possesses a small value of negative susceptibility which is independent of temperature.
Let us consider the case of single electron of charge e moving in circular orbit in an atom so the equivalent current of a single electron will be
                            I = ev
V is the angular frequency of electron motion.

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