Lueshite
Hewat A W
Ferroelectrics 7 (1974) 83-85
Neutron powder profile refinement of ferroelectric and
antiferroelectric crystal structures: sodium niobate at 22 deg C
Locality: synthetic
_database_code_amcsd 0018686
5.5679 15.5156 5.5029 90 90 90 Pbma
atom     x     y     z  B(1,1)  B(2,2)  B(3,3) B(1,2) B(1,3) B(2,3)
Nb1  .2705 .1231  .247 .003226 .000727 .003302      0      0      0
Na1    .75     0  .257 .008064 .001662 .008256      0      0      0
Na2   .781   .25  .254 .008064 .001662 .008256      0      0      0
O1     .25     0  .304 .009677 .000935 .009907      0      0      0
O2    .232   .25  .180 .009677 .000935 .009907      0      0      0
O3    .025 .1410  .533 .004838 .001246 .004953      0      0      0
O4    .456 .1090 -.036 .004838 .001246 .004953      0      0      0