Thermodynamics: Maxwell relation and thermal expansion

AI Thread Summary
The discussion focuses on using Maxwell relations and the third law of thermodynamics to demonstrate that the thermal expansion coefficient, beta, equals zero at absolute zero temperature (T=0). Participants clarify the definition of beta as the ratio of the change in volume to temperature at constant pressure. There is a mention of the relationship between heat capacities (cp and cv) and the parameter gamma in solid-state physics. The conversation indicates a need for understanding the correct Maxwell relation to apply in this context. Ultimately, the goal is to establish a theoretical foundation for thermal expansion behavior at low temperatures.
ultimateguy
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Use a Maxwell relation and the third law of thermodynamics to prove that the thermal expansion coefficient beta must be zero at T=0.

I know that B=(delta V/V)/T and I also know the Maxwell relations. I'm just not sure which one to use and how to relate it to beta.
 
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Do you mean

\beta =\frac{1}{T}\left(\frac{\partial V}{\partial T}\right)_{p}

?

Daniel.
 
no sir i want the relation b/w cp and cv with gamma for solid state
 
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