- #1
A Dhingra
- 211
- 1
hi ...
i want to ask about domain theory of ferromagnetism...
first of all , According to classical electromagnetism, two nearby magnetic dipoles will tend to align in opposite directions, so their magnetic fields will oppose one another and cancel out.
how does this happen?
after this , ...However in a few the ferromagnetic materials, they tend to align in the same direction because of a quantum mechanical effect called the exchange interaction. The Pauli exclusion principle says that two electrons with the same spin cannot also have the same "position". Therefore, under certain conditions, when the orbitals of the unpaired outer valence electrons from adjacent atoms overlap, the distribution of their electric charge in space is further apart when the electrons have parallel spins than when they have opposite spins.
With parallel spin the charges are further apart than that due to opposite spin . . . . how ? ? ?
please explain this to me...
thanks for any help...
i want to ask about domain theory of ferromagnetism...
first of all , According to classical electromagnetism, two nearby magnetic dipoles will tend to align in opposite directions, so their magnetic fields will oppose one another and cancel out.
how does this happen?
after this , ...However in a few the ferromagnetic materials, they tend to align in the same direction because of a quantum mechanical effect called the exchange interaction. The Pauli exclusion principle says that two electrons with the same spin cannot also have the same "position". Therefore, under certain conditions, when the orbitals of the unpaired outer valence electrons from adjacent atoms overlap, the distribution of their electric charge in space is further apart when the electrons have parallel spins than when they have opposite spins.
With parallel spin the charges are further apart than that due to opposite spin . . . . how ? ? ?
please explain this to me...
thanks for any help...