If each electron contributes a magnetic moment of 9.27 * 10^-24 A · m^2 (1 Bohr magneton), how many electrons per atom contribute to the saturated field of iron?

+4 votes

At saturation, when nearly all the atoms have their magnetic moments aligned, the magnetic field is equal to the permeability constant μ0 multiplied by the magnetic moment per unit volume. In a sample of iron, where the number density of atoms is approximately 8.50 image 1028 atoms/m3, the magnetic field can reach 2.00 T. If each electron contributes a magnetic moment of 9.27 image 10-24 A · m2 (1 Bohr magneton), how many electrons per atom contribute to the saturated field of iron?
 electrons/atom

asked Feb 28, 2012 in Physics by awesome ~Expert~ (1,479 points)
    

1 Answer

+2 votes
2 - sourced from a "worked examples" page
answered Mar 3, 2012 by kevineugenius ~Rookie~ (71 points)
Was there any elaboration as to the operations involved on the worked examples page or did it only give the answer?

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