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Re: [abinit-forum] Sofware for E(V) fitting with Birch-Murnaghan equation


Chronological Thread 
  • From: Marcin Dulak <Marcin_Dulak@poczta.onet.pl>
  • To: ilukacevic@fizika.unios.hr
  • Cc: forum@abinit.org
  • Subject: Re: [abinit-forum] Sofware for E(V) fitting with Birch-Murnaghan equation
  • Date: Thu, 24 Sep 2009 10:19:44 +0200

Hi,

there is also a python tool:
https://svn.fysik.dtu.dk/projects/CamposASE2/trunk/ASE/Utilities/EquationOfState.py
a part of ASE
https://wiki.fysik.dtu.dk/ase2/Utilities?highlight=(equation)#the-equationofstate-module

Best regards,

Marcin

Igor Lukacevic wrote:
Thank you all for your replies! I'll try your proposals. You've been more than helpful.

Cheers!

Igor Lukacevic

On Wednesday 23 September 2009 17:44, Scott Beckman wrote:
You can fit the Birch-Murnaghan equation of state using steepest
decent (and LOTS of patience) or the conjugate gradient method. (I
also did this in Mathematica.)

Alternatively you can download Quantum-Espresso and use the ev.f90
fitting program that is in the pwtools subdirectory.

It's more fun to write your own software, but if you don't have time
it is best to search all of the major DFT/LDA software developers
since it has probably been implements in at least one of them.

On Sep 23, 2009, at 10:11 AM, Igor Lukacevic wrote:
Dear all,

please, share with me your experience in fitting E(V) curves with
Birch-Murnaghan equation of state. Which sofware do you usually
use? I tried
with Mathematica, but I fail to reproduce the B_0 correctly (other
3 factors
are ok).
Anything is wellcome.

Thank you in advance!

Igor Lukacevic
--
Igor Lukacevic
Department of Physics
University of J. J. Strossmayer
Trg Ljudevita Gaja 6
31000 Osijek
Croatia





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