2. Assessment from PDF Analysis Using the Fd $\mathrm{3̅}$ m Model in the 20–60 Å Range.

	sample
model parameter	S1	S2	S3	S4	S5	S6
lattice parameter, a [Å]	8.435(1)	8.421(2)	8.425(2)	8.422(2)	8.418(2)	8.431(3)
coherent nanoparticle diameter [nm]	17.3(6)	12.2(3)	12.2(3)	12.5(4)	13.4(4)	12.1(4)
oxygen thermal, U iso [Å2]	0.019(5)	0.017(9)	0.018(9)	0.019(9)	0.02(1)	0.02(1)
fit residual 20–60 Å fit, R w [%]	7.5	6.6	6.8	6.9	7.4	8.5
fit residual 1–60 Å fit, R w [%]	13.6	12.8	13.3	14.1	14.6	15.7