Single crystal specimens of previously unknown garnet Eu₂PbSb₂Zn₃O₁₂ were grown in a reactive PbO:PbF₂ flux medium. The crystals were characterized by a combination of X‐ray crystallography, magnetization measurements, and the optical techniques of Raman, photoluminescence, and UV/Vis spectroscopy. The material exhibits Van Vleck paramagnetism associated with the J = 0 state of Eu³⁺, which was possible to accurately fit to a theoretical model. Band structure calculations were performed and compared to the experimental band gap of 1.98 eV. The crystals demonstrate photoluminescence associated with the 4f ⁶ configuration of the Eu³⁺ ions sitting at the distorted 8‐coordinate garnet A site. The title compound represents a unique quinary contribution to a relatively unexplored area of rare earth bearing garnet crystal chemistry.

中文翻译：

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石榴石Eu2PbSb2Zn3O12的发现，晶体生长和表征

以前未知的石榴石Eu ₂ PbSb ₂ Zn ₃ O _12的单晶标本在反应性PbO：PbF ₂助熔剂介质中生长。通过X射线晶体学，磁化强度测量以及拉曼光学技术，光致发光和UV / Vis光谱的结合来表征晶体。该材料表现出与Eu ³⁺的J = 0状态相关的Van Vleck顺磁性，可以精确地拟合理论模型。进行能带结构计算，并将其与1.98 eV的实验带隙进行比较。晶体显示出与4 f相关的光致发光 位于扭曲的8坐标石榴石A位置的Eu ³⁺离子的^6种构型。标题化合物对含稀土的石榴石晶体化学的相对未开发区域具有独特的喹啉贡献。