phonons of TiO2 
 &inputph
  tr2_ph=1.0d-15,
  prefix='TiO2',
  ldisp=.true.,
  nq1=4, nq2=4, nq3=4
  amass(1)=47.867,
  amass(2)=15.9994,
  outdir='/home/mohammadi/tmp/',
  fildyn='TiO2.dyn',
  /