In this paper, the concentration series of MgAl₂O₄:Nd³⁺ nanocrystalline powders have been synthesized by modified Pechini method. Neodymium doping concentration was varied within range of 0.05–5 ​at.%. The obtained samples have been analyzed using the various experimental methods: X-Ray diffraction, scanning electron microscopy, energy dispersive X-Ray spectroscopy, as well as steady-state and kinetics photoluminescence spectroscopy. According to XRD, all synthesized samples are monophasic without any structural impurities. The doping concentration effect on the luminescent characteristics of MgAl₂O₄:Nd³⁺ nanocrystalline particles has been studied in terms of emission intensity and lifetime. The optimal doping Nd³⁺ concentration was determined to be 0.1 ​at.%. Concentration quenching in MgAl₂O₄:Nd³⁺ powders occurred via energy transfer among the nearest neighbor ions. Performed studies shed the light on behavior of Nd³⁺ ions in nanoscale magnesium aluminum spinel.

本文采用改进的Pechini方法合成了一系列浓度系列的MgAl ₂ O ₄：Nd ³⁺纳米晶体粉末。钕掺杂浓度在0.05-5 at。％的范围内变化。使用各种实验方法对获得的样品进行了分析：X射线衍射，扫描电子显微镜，能量色散X射线光谱以及稳态和动力学光致发光光谱。根据XRD，所有合成的样品都是单相的，没有任何结构杂质。掺杂浓度对MgAl ₂ O ₄：Nd ³⁺发光特性的影响已经就发射强度和寿命研究了纳米晶体颗粒。最佳掺杂Nd ³⁺浓度确定为0.1 at。％。MgAl ₂ O ₄：Nd ³⁺粉末中的浓度猝灭是通过最近邻离子之间的能量转移而发生的。进行的研究揭示了Nd ³⁺离子在纳米级镁铝尖晶石中的行为。