At what temperature do we get Hc- 0.1Hc(0) for lead (Pb) having Tc-7.2 K?
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Answer:
Explanation:
Given data:
Transition temperature = 7.2 K
Magnetic filed strength = 3.3 x 10^4 A/m
Solution:
The formula is:
Ho = Hc [ 1 - (T / Tc)^2]
Ho = Hc [ 1 - (T / Tc)^2] = 3.3 x 10^4 x [1 - 25 / 51.28]
Ho = 3.3 x 10^4 x [1 - 0.487]
Ho = 3.3 x 10^4 x 0.613
Ho = 6.37 x 10^4 A/m
Hence the maximum value of H is Ho = 6.37 x 10^4 A/m
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