Kumar, Ravhi S. ; Antonio, Daniel ; Kanagaraj, M. ; Arumugam, S. ; Cornelius, Andrew L. ; Sinogeikin, Stanislav ; Prakash, J. ; Thakur, Gohil S. ; Ganguli, A. K. ; Hartmann, Thomas ; Zhao, Yusheng (2011) Pressure effect on crystal structure and superconductivity of La0.8Th0.2FeAsO Physica Status Solidi - Rapid Research Letters, 5 (5-6). pp. 208-210. ISSN 1862-6254
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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/pssr.20...
Related URL: http://dx.doi.org/10.1002/pssr.201105061
Abstract
We have studied the effect of pressure on the superconducting transition temperature (Tc) of thorium doped La1-xThx FeAsO (x = 0.2) superconductor under hydrostatic pressures up to 1.6 GPa by resistivity and magnetization experiments. Application of pressure increases the Tc to 31 K with a positive pressure coefficient of ~1 K/GPa. Low temperature X-ray diffraction studies performed at 7.8 K at high pressures show no pressure induced structural changes and the tetragonal P4/nmm structure is found to persist up to 31 GPa.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to John Wiley and Sons. |
| Keywords: | Superconductivity; Iron Pnictides; Pressure Effects; X-ray Diffraction; Crystal Structure |
| ID Code: | 91631 |
| Deposited On: | 23 May 2012 14:47 |
| Last Modified: | 23 May 2012 14:47 |
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