High-pressure growth of fluorine-free SmFeAsO1-x superconducting single crystals
SCIE
SCOPUS
- Title
- High-pressure growth of fluorine-free SmFeAsO1-x superconducting single crystals
- Authors
- Lee, HS; Park, JH; Lee, JY; Kim, JY; Sung, NH; Koo, TY; Cho, BK; Jung, CU; Saini, S; Kim, SJ; Lee, HJ
- Date Issued
- 2009-07
- Publisher
- IOP PUBLISHING LTD
- Abstract
- Fluorine-free SmFeAsO1-x single crystals of a nominal composition with x = 0.15 were grown under the pressure of 3.3 GPa and at 1350-1450C by using the self-flux method. Plate-shaped crystals of a few-200 mu m in lateral size were obtained. The resistively determined superconducting transition of a single crystal was at about 53.5 K, with a narrow resistive transition width of 0.5 K. The detailed crystal structure was analyzed by using synchrotron-irradiated x-ray diffractometry and high-resolution scanning transmission electron microscopy. A sharp transition, a low residual resistivity, and a large residual resistivity ratio indicate the high quality of our single crystals. The temperature and magnetic field dependences of the magnetization also confirmed the absence of extrinsic impurity phases.
- Keywords
- IRON-BASED SUPERCONDUCTORS; MODEL
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/28700
- DOI
- 10.1088/0953-2048/22
- ISSN
- 0953-2048
- Article Type
- Article
- Citation
- SUPERCONDUCTOR SCIENCE & TECHNOLOGY, vol. 22, no. 7, page. 87 - 91, 2009-07
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