Single-Crystal Growth of Sr2RuO4 by the Floating-Zone Method Using an Infrared Image Furnace with Improved Halogen Lamps
Single-Crystal Growth of Sr2RuO4 by the Floating-Zone Method Using an Infrared Image Furnace with Improved Halogen Lamps
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DOI：
10.3390/cryst11040392
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发表时间：
2021-04
期刊：
影响因子：
2.7
通讯作者：
N. Kikugawa;D. Sokolov;T. Nagasawa;A. Mackenzie
中科院分区：
文献类型：
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作者：
N. Kikugawa;D. Sokolov;T. Nagasawa;A. Mackenzie
我们报道了非常规超导体Sr2RuO4的单晶生长，这方面的研究最近达到了一个转折点。为了优化红外成像炉浮区法生长晶体的质量，对卤素灯灯丝结构进行了改进。通过减小总长丝的厚度，缩小了熔融区的形状。更重要的是，在生长过程中观察到熔区更加稳定。最后，我们得到了长度为12厘米的晶体。此外，生长的晶体具有高质量，显示出只有最纯净的晶体才会出现的1.5 K转变温度。我们还讨论了新开发的卤素灯的可用性。
We report the single-crystal growth of the unconventional superconductor Sr2RuO4, on which research has reached a turning point recently. In order to optimize the quality of crystals grown by the floating-zone method using an infrared image furnace, we focus on an improvement of the structure of the filament in the halogen lamps. By reducing the thickness of the total filament, the form of the molten zone was narrowed. More importantly, the molten zone was observed to be more stable during the growth process. Finally, we obtained the crystals with a length of 12 cm. Additionally, the grown crystal has high quality, displaying the 1.5 K transition temperature expected only for the purest crystals. We also discuss the availability of the newly developed halogen lamps.