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- Title
The Crystal Structure and Superconducting Property of (Li<sub>0.8</sub>Fe<sub>0.2</sub>)OHFeSe<sub>1-x</sub>Te<sub>x</sub>.
- Authors
Luo, Siyu; Wu, Yuxian; Wen, Zhiwei; Cui, Yajing; Zhao, Yong; Chen, Yongliang
- Abstract
(Li0.8Fe0.2)OHFeSe is a superconductor with high superconducting transition temperature (43 K) and stable in air, which is conducive to most measurements and has attracted wide attention. Here, a series of (Li0.8Fe0.2)OHFeSe1-xTex single crystals with x = 0 ~ 0.15 was synthesized by hydrothermal ion-exchange method and its crystal structure and superconductivity were investigated. The substitution of Te for Se only resulted in monotonic increase of lattice parameters a with the increase of Te doping content, while other structural parameters show abnormal evolutionary processes. Te doping suppressed the superconductivity of (Li0.8Fe0.2)OHFeSe. A positive correlation between superconducting transition temperature and lattice parameter c was observed in current (Li0.8Fe0.2)OHFeSe1-xTex system, indicating that large interlayer distance is essential for enhancement of the superconductivity in FeSe-derived superconductors.
- Subjects
SUPERCONDUCTING transition temperature; HIGH temperature superconductors; CRYSTAL structure; SUPERCONDUCTIVITY; SUPERCONDUCTORS; LATTICE constants
- Publication
Journal of Superconductivity & Novel Magnetism, 2022, Vol 35, Issue 9, p2319
- ISSN
1557-1939
- Publication type
Article
- DOI
10.1007/s10948-022-06256-y