Editing Thermodynamic potential
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'''Thermodynamic potential''' (<math>\Phi</math>). In the [[Landau theory of second | '''Thermodynamic potential''' (<math>\Phi</math>). In the [[Landau theory of second order phase transitions]] the thermodynamic potential takes the form of a [[power series]] in the [[order parameters |order parameter]] (<math>\eta</math>) (Ref. 1 Eq. 143.1) | ||
:<math>\left.\Phi(P, T, \eta)\right. = \Phi_0 + \alpha(P,T)\eta + A(P,T)\eta^2 + C(P,T)\eta^3 + B(P,T)\eta^4 + ...,</math> | :<math>\left.\Phi(P, T, \eta)\right. = \Phi_0 + \alpha(P,T)\eta + A(P,T)\eta^2 + C(P,T)\eta^3 + B(P,T)\eta^4 + ...,</math> | ||
where ''P'' is the [[pressure]] and ''T'' is the [[temperature]]. | where ''P'' is the [[pressure]] and ''T'' is the [[temperature]]. |