what happens at molecular level that magnetises a soft iron core when kept in a current carrying solenoid?please provide diagrams too.
what happens at molecular level that magnetises a soft iron core when kept in a current carrying solenoid?please provide diagrams too.
it is generally not the arrangement of molecules in objects that make them magnetic but the alignment of domains. it is possible for an atom be magnetic but not be magnetic as a macro-particle(object). this is because the domains are directed randomly in the particle cancelling their charges and giving no over-all magnetic effect(chromium for example).
but for an atom to be magnetic, it should have an almost half filled orbital so that the electron allign in a way that there is a partial charge on either side of the atom. electrons in an orbital need to be in a different quantum state because of Pauli Exclusion Principal (which means they should either have different distance from nucleaus or different spin) so they first fill up one electron in every orbital with a top-spin and then fill up with the down-spin electrons. now if there are several orbitals with only one electron, they create a partial charge on the atom, making it like a tiny magnet.
So when soft iron is brought under a magnetic field,the domains are aligned and thus the bevome magnetic.
it is generally not the arrangement of molecules in objects that make them magnetic but the alignment of domains. it is possible for an atom be magnetic but not be magnetic as a macro-particle(object). this is because the domains are directed randomly in the particle cancelling their charges and giving no over-all magnetic effect(chromium for example).
but for an atom to be magnetic, it should have an almost half filled orbital so that the electron allign in a way that there is a partial charge on either side of the atom. electrons in an orbital need to be in a different quantum state because of Pauli Exclusion Principal (which means they should either have different distance from nucleaus or different spin) so they first fill up one electron in every orbital with a top-spin and then fill up with the down-spin electrons. now if there are several orbitals with only one electron, they create a partial charge on the atom, making it like a tiny magnet.
So when soft iron is brought under a magnetic field,the domains are aligned and thus the bevome magnetic.
