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arXiv 2006.07359cond-mat.mtrl-sci
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Y2Ti2O7单晶的结构、光学和力学性能

Structural, optical and mechanical properties of Y2Ti2O7 single crystal

M. Suganya, K. Ganesan, P. Vijayakumar, Amirdha Sher Gill, R. Ramaseshan, S. Ganesamoorthy

摘要:

本文报道了用光学浮区法生长Y_2Ti_2O_7单晶。X射线衍射和拉曼光谱研究证实了晶体的结构质量。紫外-可见光研究表明,生长的晶体具有很高的光学透明度,光学带隙为3.44 eV。首次采用纳米压痕法测量了Y_2Ti_2O_7单晶的硬度。测得的硬度,压痕和体积模量被发现分别为16.4 $\pm$ 0.4,321.1 $\pm$ 6.9和243.3 $\pm$ 5.2 GPa,这是高于其多晶对应物和其组成金属氧化物,Y2 O3和TiO 2。

英文摘要:

We report on the growth of Y2Ti2O7 single crystals by optical floating zone technique. X-ray diffraction and Raman spectroscopy studies confirm the structural quality of the crystal. The UV-Vis optical studies reveal that the grown crystals have a high optical transparency with an optical band gap of 3.44 eV. The hardness of Y2Ti2O7 single crystal is measured for the first time using nanoindentation. The measured hardness, indentation and bulk modulus are found to be 16.4$\pm$0.4, 321.1$\pm$6.9 and 243.3$\pm$5.2 GPa respectively, which are higher than its polycrystalline counterpart and its constituent metal oxides, Y2O3 and TiO2.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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