La0.99Pr0.01Sc3(BO3)4晶体低温相生长及光谱学研究

IF 3.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2025-04-10 DOI:10.1016/j.optmat.2025.117040

T.A. Igolkina , E.P. Chukalina , A.B. Kuznetsov , K.A. Kokh , S.A. Klimin , V.N. Denisov , K.N. Boldyrev , M.N. Popova

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引用次数: 0

摘要

La0.99Pr0.01Sc3(BO3)4单晶采用LiBO2-LiF助熔剂顶种溶液生长法生长。在线偏振光下记录了不同温度下生长的晶体的宽范围高分辨率吸收光谱和发光光谱。首次构建了LaSc3(BO3)4:Pr3+中Pr3+离子的3H4、6、3F2、3、4、1G4、1D2、3P0、1、2、1I6重态的晶体场能级图。利用x射线衍射和光学方法确定了该晶体（空间群Cc）的单斜结构。红外反射率和拉曼光谱清楚地揭示了BO3分子基团的贡献。在晶体生长过程中，Pr3+离子在反位缺陷（即Ln3+离子在八面体位置而不是Sc3+， Sc3+在Ln3+位置）附近发生跃迁，从而观察到吸收谱线的弱卫星。

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Growth and optical spectroscopy study of low-temperature phase of La0.99Pr0.01Sc3(BO3)4 crystal

La_0.99Pr_0.01Sc₃(BO₃)₄ single crystals were grown by top-seeded solution growth method using LiBO₂–LiF flux. Wide-range high-resolution absorption and luminescence spectra of the grown crystals at different temperatures were registered in linearly polarized light. The crystal-field level diagram for the ³H_4,6, ³F_2,3,4, ¹G₄, ¹D₂, ³P_0,1,2, and ¹I₆ multiplets of the Pr³⁺ ion in LaSc₃(BO₃)₄:Pr³⁺ was constructed for the first time. A monoclinic structure of the crystal (space group Cc) was determined using X-ray diffraction and optical methods. IR reflectance and Raman spectra clearly reveal the contribution of BO₃ molecular groups. Weak satellites of the absorption lines were observed and explained by transitions in Pr³⁺ ions located near antisite defects (i.e. Ln³⁺ ions in octahedral sites instead of Sc³⁺, and Sc³⁺ in Ln³⁺ sites) formed during the crystal growth.

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.