Pressure-Induced Isostructural Phase Transition and Correlation of FeAs Coordination with the Superconducting Properties of 111-Type NaFeAs.
The effect of pressure on the crystalline structure and super-conducting transition temperature (T) of the 111-type NaFeAs system using in situ high-pressure synchrotron X-ray powder diffraction and diamond anvil cell techniques is studied. A pressure-induced tetragonal to tetragonal isostructural p...
| Publicado en: | Journal of the American Chemical Society Vol. 133; no. 20; pp. 7892 - 7897 |
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| Autores principales: | , , , , , , , , , , , , , , , , , |
| Formato: | Artículo |
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American Chemical Society
5/25/2011
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| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=61820396&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 61820396 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 00027863 ACS jtl: Journal of the American Chemical Society issn: 00027863 maglogo: N pubinfo: dt: 5/25/2011 vid: 133 iid: 20 pid: 997 pub: American Chemical Society artinfo: ui: 61820396 10.1021/ja2009949 ppf: 7892 ppct: 5 formats: tig: atl: Pressure-Induced Isostructural Phase Transition and Correlation of FeAs Coordination with the Superconducting Properties of 111-Type NaFeAs. aug: au: Qingqing Liu Xiaohui Yu Xiancheng Wang Zheng Deng Yuxi Lv Jiillong Zhu Sijia Zhang Haozhe Liu Wenge Yang Lin Wang Hokwang Mao Guoyin Shen Zhong-Yi Lu Yang Ren Zhiqiang Chen Zhijun Lin Yusheng Zhao Changqing Jin affil: Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China Los Alamos Neutron Science Center (LANSCE), Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States Natural Science Research Center, Harbin Institute of Technology, Harbin 150080, China High Pressure Synergetic Consortium (HPSynC) arid High Pressure Collaborative Access Teath (HPCAT), Geophysical Laboratory, Carnegie Institution of Washington, Argonne, Illinois 60439, United States Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC 20015, United States Department of Physics, Renmin University of China, Beijing 100872, China Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, United States National Synchrotron Light Source, Brookhaven National Laboratory, Upton, New York 11973, United States su: Materials at high pressures Crystalline electric field Synchrotron radiation X-ray diffraction Diamond anvil cell Rietveld refinement Superconductors sug: subj: Materials at high pressures Crystalline electric field Synchrotron radiation X-ray diffraction Diamond anvil cell Rietveld refinement Superconductors ab: The effect of pressure on the crystalline structure and super-conducting transition temperature (T) of the 111-type NaFeAs system using in situ high-pressure synchrotron X-ray powder diffraction and diamond anvil cell techniques is studied. A pressure-induced tetragonal to tetragonal isostructural phase transition was found. The systematic evolution of the FeAs tetrahedron as a function of pressure based on Rietveld refinements on the powder X-ray diffraction patterns was obtained. The nonmonotonic T(P) behavior of NaFeAs is found to correlate with the anomalies of the distance between the anion (As) and the iron layer as well as the bond angle ofAs-Fe-As for the two tetragonal phases. This behavior provides the key structural information in understanding the origin of the pressure dependence of T for 111-type iron pnictide superconductors. A pressure-induced structural phase transition is also observed at 20 GPa. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2011 holdings: @attributes: islocal: N |
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