- #1
g_mogni
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Hello,
I know that the latent heat of a first-order isothermal and isobaric phase transition is in general given by the difference in enthalpies between the two phases, but my question is: do you know if there is there a way to estimate its value "from first principles" for the case of a first-order polymorphic solid-solid structural phase transition (say the transition from the cubic-diamond and beta-tin phases of crystalline silicon)? By first principles I mean not resorting to classical thermodynamics, but considering for example the difference in interatomic forces between the two phases. Any insight on this would be greatly appreciated!
Gabriele
I know that the latent heat of a first-order isothermal and isobaric phase transition is in general given by the difference in enthalpies between the two phases, but my question is: do you know if there is there a way to estimate its value "from first principles" for the case of a first-order polymorphic solid-solid structural phase transition (say the transition from the cubic-diamond and beta-tin phases of crystalline silicon)? By first principles I mean not resorting to classical thermodynamics, but considering for example the difference in interatomic forces between the two phases. Any insight on this would be greatly appreciated!
Gabriele
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