In this study, the lanthanide-doping (Ce³⁺, Sm³⁺, Eu³⁺ and Tb³⁺) effects on the formation of leucite (KAlSi₂O₆) by sol-gel synthesis were investigated. The phase purity and morphological properties of lanthanide-doped specimens have been estimated. The proposed sol-gel synthesis route is suitable for the preparation of mixed leucite-kalsilite ceramics doped with Sm³⁺, Eu³⁺ and Tb³⁺ (up to 10 M %). This simple and successful synthetic approach offers a feasible way to obtain lanthanide-doped potassium alumosilicate ceramics with possible application in odontology. The synthesis products were characterized using thermal analysis (TG/DTA), X-ray powder diffraction (XRD) analysis, infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). Moreover, the optical properties of lanthanide-doped synthesis products were also investigated.

The luminescence spectrum of Eu³⁺-doped (5 mol%) leucite-kalsilite sample consists of broad lines associated with ⁵D₀ → ⁷F_0–4 transition (570–710 nm, orange-red region) of Eu³⁺ ions with the hypersensitive line at 616 nm.

中文翻译：

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镧系元素掺杂对白云石KAlSi 2 O 6形成的影响

在这项研究中，研究了镧-掺杂（Ce ³⁺，Sm ³⁺，Eu ³⁺和Tb ³⁺）对溶胶-凝胶合成白云母（KAlSi ₂ O ₆）形成的影响。已经估计了掺杂镧系元素的样品的相纯度和形态学特性。所提出的溶胶-凝胶合成路线适合于制备掺有Sm ³⁺，Eu ³⁺和Tb ³⁺的混合白云石-钾铝石陶瓷。（最高10 M％）。这种简单而成功的合成方法为获得掺杂镧系元素的铝硅酸钾陶瓷提供了一种可行的方法，并可能在牙科学中应用。使用热分析（TG / DTA），X射线粉末衍射（XRD）分析，红外光谱（FTIR）和扫描电子显微镜（SEM）对合成产物进行表征。此外，还研究了掺杂镧系元素的合成产物的光学性质。

Eu ³⁺掺杂（5 mol％）的白云母-方解石样品的发光光谱由宽谱线组成，这些谱线与Eu ³⁺离子的⁵ D ₀  →  ⁷ F _0-4跃迁（570-710 nm，橙红色区域）相关超灵敏线在616 nm。