Single-crystal growth of Sr2RuO4 by the floating-zone method using an infrared image furnace with improved halogen lamps
Abstract
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.
Citation
Kikugawa , N , Sokolov , D A , Nagasawa , T & Mackenzie , A P 2021 , ' Single-crystal growth of Sr 2 RuO 4 by the floating-zone method using an infrared image furnace with improved halogen lamps ' , Crystals , vol. 11 , no. 4 , e392 . https://doi.org/10.3390/cryst11040392
Publication
Crystals
Status
Peer reviewed
ISSN
2073-4352Type
Journal article
Description
Funding: This work is supported by a KAKENHI Grants-in-Aids for Scientific Research (Grant Nos.17H06136, 18K04715, and 21H01033) from the Japan Society for the Promotion of Science (JSPS) and by a JST-Mirai Program (Grant No. JPMJMI18A3).Collections
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