Table 1 Wyckoff sites (Wyck.), fractional lattice coordinates, isotropic thermal parameters (Biso), and occupancies (Occ.) for (Ti, Zr, Hf, Sn)O2 in the α-PbO2 structure determined by Rietveld refinement.

From: Phase stability of entropy stabilized oxides with the α-PbO2 structure

 

Wyck.

x

y

z

Biso

Occ.

Ti

4c

0

0.316(8)

0.25

1.3(3)

0.25

Zr

4c

0

0.316(8)

0.25

1.3(3)

0.25

Hf

4c

0

0.316(8)

0.25

1.3(3)

0.25

Sn

4c

0

0.316(8)

0.25

1.3(3)

0.25

O

8d

0.269(9)

0.108(6)

0.075(9)

1.4(1)

1

  1. The Rwp value is 10.464 and the goodness of fit is 2.27.