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arXiv 2108.07093cond-mat.str-el
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SrVO $_3$单晶的Laser浮区生长

Laser floating zone growth of SrVO$_3$ single crystals

Tanya Berry, Shannon Bernier, Gudrun Auffermann, Tyrel M. McQueen, W. Adam Phelan

摘要:

钙钛矿SrVO $_3$由于其简单的金属特性和在还原环境中的稳定性而在各种应用中受到关注。本文报道了用激光浮区技术制备SrVO $_3$单晶的方法。劳厄衍射意味着单畴CA。长度为30 mm。优化的晶体的化学计量被发现是Sr $_{0.985}$ VO $_{2.91}$使用电感耦合等离子体发射光谱和中子粉末衍射分析,与组合物可调取决于晶体提拉速率。从2到300 K的热容测量显示的组合物的变化,归因于杂质散射和声子dynamics.Our的结果表明,在制备一系列材料的激光浮区技术的实用性,我们的进步与SrVO $_3$可能有助于导致包括催化,透明导电氧化物,电子发射器和其他电子器件的应用。

英文摘要:

The perovskite SrVO$_3$ is of interest for a variety of applications due to its simple metallic character and stability in reducing environments. Here we report the preparation of single-crystal SrVO$_3$ using the laser floating zone technique. Laue diffraction implies single domains ca. 30 mm in length. The stoichiometry of optimized crystals was found to be Sr$_{0.985}$VO$_{2.91}$ using inductively coupled plasma optical emission spectrometry and neutron powder diffraction analysis, with compositions adjustable depending on the crystal pulling rate. Heat capacity measurements from 2 to 300 K show variations with composition, attributable to a combination of impurity scattering and changes in phonon dynamics.Our results demonstrate the utility of the laser floating zone technique in preparing a range of materials, and our advances with SrVO$_3$ may help lead to applications including catalysis, transparent conducting oxides, thermionic emitters, and other electronic devices.

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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