Sol-Gel Synthesis, X-Ray Diffraction Studies, and Electric Conductivity of Sodium Europium Silicate

Table 2

Coordinates, isotropic thermal parameters of atoms 𝐵_iso and occupancies 𝐺 (space group P6₃/m, a = 9.4425(7), c = 6.9119(5), Å).

Atom	Position	𝑥	𝑦	𝑍	𝐵iso, Å^2	𝐺
Eu(1)	4f	2/3	1/3	0.00217	0.512	0.745(8)
Na(1)	4f	2/3	1/3	0.00217	0.512	0.255(8)
Eu(2)	6h	0.2320(5)	0.9907	1/4	0.198	1.003(5)
Na(2)	6h	0.2320(5)	0.9907	1/4	0.198	−0.003(5)
Si	6h	0.3998(6)	0.374(2)	1/4	1.005	1
O(1)	6h	0.3320(3)	0.493(8)	1/4	1.693	1
O(2)	6h	0.3320	0.473(4)	1/4	1.693	1
O(3)	12i	0	0.247(8)	0.056(5)	1.693	1
O(4)	2a	0	0	1/4	1.693	1