What is the cause for diamagnetism and other types of magnetism?

AI Thread Summary
Diamagnetism and other types of magnetism are influenced by quantum mechanical properties, particularly the intrinsic angular momentum (spin) and orbital angular momentum of electrons, which create magnetic dipole moments. Identifying whether a molecule or atom is diamagnetic, paramagnetic, or ferromagnetic involves understanding the cumulative magnetic effects of all electrons and their interactions within atomic bonds. The bonding between atoms affects their magnetic dipoles and their response to external magnetic fields. Additionally, the application of a magnetic field alters electron states, further impacting their magnetic properties. The complexity of these interactions makes a simple explanation insufficient to fully capture the nuances of magnetism.
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What is the cause for diamagnetism and other types of magnetism?

Is it related to Farady's law or quantum mechanical properties of matter?
 
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So how do identify easily that a molecule or atom is diamagnetic or paramagnetic or ferromagnetic?
 


It's actually more complex than two sentences on physics forums can do justice to the subject. Each electron has intrinsic angular momentum (spin) which gives rise to a magnetic dipole moment, and orbital angular momentum depending on what state it is in inside the atom, which also gives rise to a magnetic moment. Add up all the magnetic effects of all the electrons in an atom and you can get a total magnetic moment. But you also have to take into consideration how the atoms bond with each to form a solid, because will effect their magnetic dipole's ability to respond to an applied field. Also, in responding to an applied magnetic field, the electron states change, which change their magnetic properties.
 

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