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Determine the basic term of heat capacity for a ferro magnetic material which is having
low temperatures. Consider the magnon dispersion relation as @= Ak²,
(a) C = 0.113k;
B.
Aħ
K B
(b) C =1.13k;
Aħ
(c) C=0.113
Aħ
3
2.
(d) C =1.3k3
Aħ
314

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