[Wien] about Murnaghan's EOS equation

[Stefaan Cottenier]

A derivation and physical background of the Murnaghan and 
Birch-Murnaghan equations (including references) can be found 
http://en.wikipedia.org/wiki/Birch-Murnaghan_equation_of_state

Stefaan

>I would like to very much thank you for your detailed expainations. But I'am 
>still a little confused regarding why the Murnaghan EOS equation can be 
>widely used as the fitting functions for evaluating the equilibrium lattice 
>constant in most First-princiles code. Probably this equation is more 
>appropriate formula mathematically and meaningful in a physical sense 
>compared with other equations. Could you please tell me in a little more 
>details about this? Also is there any references? Thank you very much.
>With best regards,
>
>He Duan, PhD
>Room 24309, National Laboratory for Infrared Physics
>Institute of Technical Physics
>Chinese Academy of Sciences
>500 Yutian Road
>Shanghai, 200083, China
>E-mail: duanhe at mail.sitp.ac.cn
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