For the Bi 2 O 3 -B 2 O 3 flux growths, the resulting crystals contained high levels of Bi. XRF revealed Bi incorporation ranging from 4.859(9) at% to 5.683(9) at% on the Eu sites. To try to reduce these inclusions, excess Eu 2 O 3 was included, doubling the moles of Eu in the starting mixture. In that case, the Bi inclusions were 2.11(2) at% on the Eu site, still quite high. This large defect rate can provide a drastic example of the effects of flux inclusions on the inhomogeneous linewidth of stoichiometric materials.