Site occupation and solubility limit of Sc in Lu3Al5O12

A study of radiation effects on LuAG:Ce(Pr) co-activated with Ca

“…4(a) shows absorption induced (after 1 kGy) in LuAG:Pr and LuAG:Sc,Pr crystals (emission of Pr 3 þ is shown by a dot curve). Co-doping with Sc was tested taking into account that smaller Sc 3 þ filling both c-cites and octahedral a-sites [32] may reduce lattice distortions due to Pr Lu and non-equivalent Lu Al substitutions, while energy transfer from sensitizer Sc 3 þ to Pr 3 þ [33] may improve the scintillation performance. Absorption induced in LuAG:Pr,Sc, as compared to Sc-free crystals, is however high (it was also the case for lower Sc concentrations).…”

Cerium-doped gadolinium-scandium-aluminum garnet powders: synthesis and use in X-ray luminescent diamond composites

“…We note that attempts to experimentally determine the compositions that are stable under the powders' synthesis conditions, the ceramics' fabrication, or the growth of single crystals have been repeatedly undertaken for certain types of garnets [20][21][22][23][24]. Empirical equations have been successfully developed to estimate the calculated values of the unit cell parameters for both existing and not yet synthesized garnets [29,30].…”

“…However, present experimental data on scandium-containing solid solutions with a garnet structure [20][21][22][23][24][25] are not sufficient to assess the conditions for the stable compositions based on GSAG with different concentrations of scandium in the dodecahedral and octahedral positions. In addition, questions remain about the effect of Sc 3+ in each of the positions of the garnet crystal lattice on the solubility limits of various alloying components, including cerium in gadoliniumscandium-aluminum garnet (GSAG:Ce).…”

Crystal growth, structure, optical and scintillation properties of Ce3+-doped Tb2.2Lu0.8Al5O12 single crystals

“…The chemical formulae reflecting the site occupation preference by constituent ions in the dodecahedral {c}, octahedral As for the garnets, the lattice constant a 0 could be empirically expressed as follows: 26,27…”