Kumar, Ravhi S. ; Antonio, Daniel ; Kanagaraj, M. ; Arumugam, S. ; Prakash, J. ; Sinogeikin, Stanislav ; Thakur, Gohil S. ; Ganguli, A. K. ; Cornelius, Andrew ; Zhao, Yusheng (2011) Pressure induced structural transition and enhancement of superconductivity in Co doped CeFeAsO Applied Physics Letters, 98 (2). 012511_1-012511_3. ISSN 0003-6951
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Official URL: http://apl.aip.org/resource/1/applab/v98/i1/p01251...
Related URL: http://dx.doi.org/10.1063/1.3536521
Abstract
The superconducting CeFe1-xCoxAsO (Co = 0.1) oxyarsenide with a transition temperature (Tc) 11.4 K has been investigated by in situ high pressure synchrotron x-ray diffraction, magnetization, and resistivity measurements. The experiments performed at 10 K up to 6 GPa and at room temperature (RT) up to 55 GPa indicate large anisotropic lattice compression. A pressure induced structural change to a collapsed tetragonal structure is observed above 10 GPa at RT. We report here the enhancement of Tc from 11.4 to 12.3 K with a small increase in pressure up to 0.4 GPa and is first observed in an electron doped Ce-1111 system.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Institute of Physics. |
| Keywords: | Cerium Compounds; Cobalt; Electrical Resistivity; High-pressure Solid-state Phase Transformations; High-temperature Superconductors; Iron Compounds; Magnetisation; X-ray Diffraction |
| ID Code: | 91634 |
| Deposited On: | 23 May 2012 14:47 |
| Last Modified: | 23 May 2012 14:47 |
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