Structures of 6H perovskites Ba(3)CaSb(2)O(9) and Ba(3)SrSb(2)O(9) determined by synchrotron X-ray diffraction, neutron powder diffraction and ab initio calculations
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The structures of the 6H perovskites Ba(3)B(2+)Sb(5+)(2)O(9), B = Ca and Sr, have been solved and refined using synchrotron X-ray and neutron powder diffraction data. Ba(3)CaSb(2)O(9) and Ba(3)SrSb(2)O(9) have monoclinic C2/c and triclinic P/bar 1 space-group ... ...
