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XRD patterns for nanocrystals at given particle sizes. The vertical bars represent the standard diffraction data for bulk from JCPDS file (Ref. 12). The inset is a high resolution TEM image for .
Particle size dependence of molar ratios of absorbed water molecules and citric species in nanocrystals. The chemical formula of nanocrystals is described as .
Particle size dependence of (a) lattice volume and (b) axis ratio of for nanocrystals.
PL spectra of nanocrystals with diameters of (a) , (b) , (c) , and (d) .
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