R1.33Ni3Ga8 （R = Tb、Ho、Er、Tm、Lu）化合物的晶体结构

IF 3.4 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Solid State Sciences Pub Date : 2024-10-31 DOI:10.1016/j.solidstatesciences.2024.107737

Nataliya Muts, Yaroslav Tokaychuk, Roman Gladyshevskii

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引用次数: 0

摘要

通过 X 射线粉末衍射和能量色散 X 射线光谱，确定了五种具有 Gd1.33Pt3Al8 型结构（皮尔逊符号 hR51，空间群 R-3m）的新三元化合物的存在：Tb1.33Ni3Ga8（а = 4.2056(1)，с = 37.8913(9)埃），Ho1.33Ni3Ga8（а = 4.19666(9)，с = 37.7882(9)埃），Er1.33Ni3Ga8（a = 4.19290(8), c = 37.7446(8) Å)、Tm1.33Ni3Ga8 (a = 4.18819(7), c = 37.6980(7) Å)和 Lu1.33Ni3Ga8 (a = 4.1826(1), c = 37.647(1) Å)。R1.33Ni3Ga8 三元化合物的结构属于线性互生结构系列，通式为 R0.67TnM2n + m，由 R0.67Ga (R0.67M)原子层构成，原子层之间由单层或双层 NiGa2 板（TM2）隔开。含有稀土金属原子的原子层的特点是稀土金属原子和镓原子三角形的无序分布。

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Crystal structures of the R1.33Ni3Ga8 (R = Tb, Ho, Er, Tm, Lu) compounds

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Crystal structures of the R1.33Ni3Ga8 (R = Tb, Ho, Er, Tm, Lu) compounds

The existence of five new ternary compounds with Gd_1.33Pt₃Al₈-type structure (Pearson symbol hR51, space group R-3m) was established by means of X-ray powder diffraction and energy-dispersive X-ray spectroscopy: Tb_1.33Ni₃Ga₈ (а = 4.2056(1), с = 37.8913(9) Å), Ho_1.33Ni₃Ga₈ (а = 4.19666(9), с = 37.7882(9) Å), Er_1.33Ni₃Ga₈ (a = 4.19290(8), c = 37.7446(8) Å), Tm_1.33Ni₃Ga₈ (a = 4.18819(7), c = 37.6980(7) Å), and Lu_1.33Ni₃Ga₈ (a = 4.1826(1), c = 37.647(1) Å). The structures of the ternary R_1.33Ni₃Ga₈ compounds belong to a family of linear-intergrowth structures with the general formula R_0.67T_nM_{2n + m} and are built from atom layers of the composition R_0.67Ga (R_0.67M), separated by single or double NiGa₂ slabs (TM₂). The layers containing the rare-earth metal atoms are characterized by a disordered distribution of rare-earth metal atoms and Ga-atom triangles.

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来源期刊

Solid State Sciences 化学-无机化学与核化学

CiteScore

6.60

自引率

2.90%

发文量

214

审稿时长

27 days

期刊介绍： Solid State Sciences is the journal for researchers from the broad solid state chemistry and physics community. It publishes key articles on all aspects of solid state synthesis, structure-property relationships, theory and functionalities, in relation with experiments. Key topics for stand-alone papers and special issues: -Novel ways of synthesis, inorganic functional materials, including porous and glassy materials, hybrid organic-inorganic compounds and nanomaterials -Physical properties, emphasizing but not limited to the electrical, magnetical and optical features -Materials related to information technology and energy and environmental sciences. The journal publishes feature articles from experts in the field upon invitation. Solid State Sciences - your gateway to energy-related materials.