We report a detailed analysis of both structural characterization and high-resolution spectroscopic properties of Nd³⁺-doped YPO₄ and LuPO₄ in the form of nano/micro -powders. LuPO₄, like YPO₄ crystalizes in a zircon-type tetragonal system. Nd³⁺ ion in substitution of Lu³⁺ or Y³⁺ cations occupies the main symmetry site D_2d and the presence of additional components in the spectra may indicate the presence of Nd³⁺ clusters, first Nd³⁺ pairs. For both types of compounds (with Lu³⁺ and Y³⁺ ion in the host lattice) the ⁴F_3/2 excited level decay times recorded at 77 K have shown an abnormal temporal behavior of Nd³⁺ photoluminescence. This phenomenon is observed both for nano and micro-powdered samples.

我们报告了纳米/微粉形式的Nd ³⁺掺杂YPO ₄和LuPO _4的结构表征和高分辨率光谱性质的详细分析。像YPO ₄一样，LuPO ₄在锆石型四方晶系中结晶。取代Lu ³⁺或Y ³⁺阳离子的Nd ³⁺离子占据主要对称位点D _2d，并且光谱中其他组分的存在可能表明存在Nd ³⁺簇，即第一个Nd ³⁺对。对于两种类型的化合物（具有Lu ³⁺和Y ³⁺在77 K处记录的⁴ F _3/2激发能级衰减时间显示Nd ³⁺光致发光的异常时间行为。在纳米和微粉样品中均观察到此现象。