&CONTROL
   calculation   = 'relax'
   ! to speed-up
   forc_conv_thr = 2e-3
/

&SYSTEM
   ibrav       = 4
   celldm(1)   = 5.3966
   celldm(3)   = 3.0
   
   nat         = 3
   ntyp        = 2

   ! low cutoffs to speed-up
   ecutwfc     = 20.0
   ecutrho     = 120.0

   nosym       = .true.

   degauss     = 0.03
   occupations = 'smearing'
   smearing    = 'methfessel-paxton'
/

&ELECTRONS
   mixing_beta = 0.3
   scf_must_converge = .false.
   ! to speed-up
   tqr         = .true.
/

&IONS
/

ATOMIC_SPECIES 
   O   1.0  O.pbe-rrkjus.UPF
   Al  1.0  Al.pbe-rrkj.UPF

ATOMIC_POSITIONS crystal
   O    0.00000000 0.00000000 0.45000000
   Al   0.00000000 0.00000000 0.27216550
   Al   0.66666666 0.33333333 0.00000000

K_POINTS automatic
   4   4   1   1   1   1 
