Figure 2.

Measured XRD θ–2θ spectra for a series of SCBRO samples with different x values marked aside: (a) spectra over a wide angle-range, and the local amplified profiles of reflection (101) (b), reflections (202) and (040) (c), and reflections (204), (323), and (161) (d) respectively. The standard o-SRO spectrum is inserted in (a) for reference.