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Re: Re: [abinit-forum] TiO2 lattice constant optimization


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  • From: taoj0003@ntu.edu.sg
  • To: forum@abinit.org
  • Subject: Re: Re: [abinit-forum] TiO2 lattice constant optimization
  • Date: Thu, 26 Apr 2007 13:36:04 +0200

My input file is shown below.

the pseduopotetial i am using are download from the Abinit website. Both the
Ti and O are Troullier-Martins pseudopotentials. is there anything wrong?
thanks


# Crystalline TiO2



kptopt 1 # Option for the automatic generation of k points,
ecut 120.0 #

toldfe 1.0d-10

acell 4.55 4.55 2.95812 angstrom
optcell 6

ntypat 2
znucl 22 8

natom 6
typat 1 1 2 2 2 2
xred
0.00000000 0.00000000 0.00000000 #Ti
0.50000000 0.50000000 0.50000000 #Ti
0.30530000 0.30530000 0.00000000 #O
-0.30530000 -0.30530000 0.00000000 #O
0.80530000 0.19470000 0.50000000 #O
0.19470000 0.80530000 0.50000000 #O


# 0.00000000 0.00000000 0.00000000 #Ti
# 2.29686500 2.29686500 1.47906000 #Ti
# 1.40246577 1.40246577 0.00000000 #O
# -1.40246577 -1.40246577 0.00000000 #O
# 3.69933077 0.89439923 1.47906000 #O
# 0.89439923 3.69933077 1.47906000 #O


nstep 30



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