Pressure-Induced Phase Transitions and Correlation between Structure and Superconductivity in Iron-Based Superconductor Ce(O0.84F0.16)FeAs
文献类型：期刊论文
| 作者 | Zhao, JG ; Liu, HZ ; Ehm, L ; Dong, DW ; Chen, ZQ ; Liu, QQ ; Hu, WZ ; Wang, NL ; Jin, CQ |
| 刊名 | INORGANIC CHEMISTRY
 |
| 出版日期 | 2013 |
| 卷号 | 52期号:14页码:8067 |
| ISSN号 | 0020-1669 |
| 通讯作者 | Zhao, JG (reprint author), Harbin Inst Technol, Acad Fundamental & Interdisciplinary Sci, Nat Sci Res Ctr, Harbin 150080, Peoples R China. |
| 中文摘要 | High-pressure angle-dispersive X-ray diffraction experiments on iron-based superconductor Ce(O0.84F0.16)FeAs were performed up to 54.9 GPa at room temperature. A tetragonal to tetragonal isostructural phase transition starts at about 13.9 GPa, and a new high-pressure phase has been found above 33.8 GPa. At pressures above 19.9 GPa, Ce(O0.84F0.16)FeAs completely transforms to a high-pressure tetragonal phase, which remains in the same tetragonal structure with a larger a-axis and smaller c-axis than those of the low-pressure tetragonal phase. The structure analysis shows a discontinuity in the pressure dependences of the Fe-As and Ce-(O, F) bond distances, as well as the As-Fe-As and Ce-(O, F)-Ce bond angles in the transition region, which correlates with the change in T-c of this compound upon compression. The isostructural phase transition in Ce(O0.84F0.16)FeAs leads to a drastic drop in the superconducting transition temperature T-c and restricts the superconductivity at low temperature. For the 1111-type iron-based superconductors, the structure evolution and following superconductivity changes under compression are related to the radius of lanthanide cations in the charge reservoir layer. |
| 资助信息 | National Natural Science Foundation of China [10904022, 10975042]; China Postdoctoral Science Foundation [200902410]; Postdoctoral Science-research Developmental Foundation of Heilongjiang Province [LBH-Q12095]; Fundamental Research Funds for the Central Universities [HIT.NSRIF.2013054]; Harbin Institute of Technology (HIT); NSF; MOST of China; COMPRES (the Consortium for Materials Properties Research in Earth Sciences); National Synchrotron Light Source, Brookhaven National Laboratory; U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-98CH10886] |
| 语种 | 英语 |
| 公开日期 | 2014-01-16 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/57354]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Zhao, JG,Liu, HZ,Ehm, L,et al. Pressure-Induced Phase Transitions and Correlation between Structure and Superconductivity in Iron-Based Superconductor Ce(O0.84F0.16)FeAs[J]. INORGANIC CHEMISTRY,2013,52(14):8067. |
| APA | Zhao, JG.,Liu, HZ.,Ehm, L.,Dong, DW.,Chen, ZQ.,...&Jin, CQ.(2013).Pressure-Induced Phase Transitions and Correlation between Structure and Superconductivity in Iron-Based Superconductor Ce(O0.84F0.16)FeAs.INORGANIC CHEMISTRY,52(14),8067. |
| MLA | Zhao, JG,et al."Pressure-Induced Phase Transitions and Correlation between Structure and Superconductivity in Iron-Based Superconductor Ce(O0.84F0.16)FeAs".INORGANIC CHEMISTRY 52.14(2013):8067. |
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来源：物理研究所
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