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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 w= Ak? .
3
(a) C = 0.113k,
Aħ
kB
(b) С %3D1.13k,
Aħ
(c) C = 0.113|
Aħ
(d) C = 1.3k,
Aħ

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