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Powder XRD patterns of the polycrystalline pellets. Reference patterns of the monazite and zircon type are also plotted. Triangles indicate the peaks corresponding to the zircon phase in (10%).
(a) Typical RHEED oscillations during growth of films. (b) XRD scan of the as-grown (10 mol %) film and after annealing. The Miller indices are labeled in a manner following the cubic crystal structure of the substrate. AFM topography of the (10 mol %) film (c) as-grown and (d) after postannealing. (e) XAS spectra of the postannealed film. Reference spectrum of was taken from Ref. 18.
PL spectra of (a) the polycrystalline pellets and (b) the postannealed films of and (c) the pellet. (d) PLE spectra obtained from the postannealed (10 mol %) and (10 mol %) films. Note that (10 mol %) and showed a similar PL shape, reflecting the same zircon structure of the host material, independent of whether they are pellets or films (data not shown).
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