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The synthesis and structural characterization of a new precursor solid solution SrAl 2 2 x B x O 4 (0 v x v 0.2), for phosphor materials is reported. The synthesis temperature of SrAl 2 O 4 is considerably reduced by B substitution. The new solid solution keeps the tridymite-like structure (P2 1 ) characteristic of SrAl 2 O 4 . Microstructural characterization, by means of SAED and HREM, did not evidence additional ordering due to B doping. However, damage under the electron beam gives rise to complex defects, suggesting that B substitutes Al at tetrahedral positions in isolated planes along the [011] direction.

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