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pearapple
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Homework Statement
Consider a paramagnetic material. The magnetic field generated by each dipole in the material is 1/30 T.
What is the magnetic field at a given spin, due to the presence of nearby spins?
Homework Equations
The Attempt at a Solution
So I need to multiply 1/30 by however many spins are nearby.
But I'm not sure how many this would be. If the paramagnetic material is in a crystal, then there are 8 dipoles around it, but there are also dipoles below and underneath it. Which ones do I count as 'nearby'? What is the total number of dipoles?
Also, I'm measuring the magnetic field at one particular dipole. So the magnetic field from that dipole doesn't count, right?