[xcrysden] problem in making monoclinic cell

mohnish pandey mohnish.iitk at gmail.com
Sun Dec 27 08:10:44 CET 2009


Dear xcrysden users,
                                I am using PWSCF for BaTiO3 thin films
calculation, I just wanted to visualize the (110) surface of the same by
xcrysden. I am pasting the input PWSCF file for the same, the problem is my
system is monoclinic but xcrysden is showing it to be cubic, may be I am
doing some mistake. Please anybody help me out to fix the problem. The
calcualtin is for one layer.

Sincere thanks in advance,
Mohnish

&control
    calculation = 'relax'
    prefix='BaTiO3'
    outdir='/home/rajpala/Desktop/BaTiO3'
    pseudo_dir="/home/rajpala/Desktop/BaTiO3"
 /
 &system
    ibrav=12,a =5.629,b=4.875,c=20,celldm(4)=0.577344716 ,nat=5, ntyp= 3,
    ecutwfc =
30,ecutrho=240,occupations='smearing',degauss=0.01,smearing='gaussian'
 /
 &electrons
   diagonalization='david'
   mixing_mode = 'local-TF'
   mixing_beta = 0.7
   conv_thr = 1.0d-6
 /
&IONS
  ion_dynamics='bfgs'
  trust_radius_min=1.D-4
/
ATOMIC_SPECIES
 Ba 137.327 Ba.pbe-nsp-van.UPF
 Ti 47.867  Ti.pbe-sp-van_ak.UPF
 O  15.999  O.pbe-van_ak.UPF
ATOMIC_POSITIONS (crystal)
 Ba 0.5 0.5 0.070375
 Ti 0.25 0.0 0.070375
 O  0.0 0.0 0.0
 O  0.5 0.0 0.0
 O  0.0 0.5 0.070375
K_POINTS (automatic)
 5 5 1 0 0 0

-- 
Mohnish Pandey
Y6262,4th Year Undergraduate,
Department of Chemical Engineering,
IIT KANPUR
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