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Consider a magnetic system with n independent molecules per unit volume, each of which has four energy levels
given by €; = {0 ; A – gµâB ; A ; A+ gµBB} where 'A' is a positive quanta of energy and g is a constant.
(c) Compute the magnetization M
(d) Show that the magnetic suscentibility x is given by
X = lim
B→0
2nHo(gµB)?
kBT (3+ eA/(kBT))
B

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