Hostname: page-component-586b7cd67f-dsjbd Total loading time: 0 Render date: 2024-11-20T11:37:06.874Z Has data issue: false hasContentIssue false
  • English
  • Français

High Pressure Low Temperature Studies on 1-2-2 Iron-based Superconductors Using Designer Diamond Cells

Published online by Cambridge University Press:  05 August 2013

Walter O. Uhoya ,
Georgiy M. Tsoi ,
Yogesh K. Vohra ,
Jonathan, E. Mitchell ,
Athena Safa-Sefat  and
Samuel Weir
Walter O. Uhoya
Affiliation:
Department of Physics, University of Alabama at Birmingham (UAB), Birmingham, AL 35294, USA
Georgiy M. Tsoi
Affiliation:
Department of Physics, University of Alabama at Birmingham (UAB), Birmingham, AL 35294, USA
Yogesh K. Vohra
Affiliation:
Department of Physics, University of Alabama at Birmingham (UAB), Birmingham, AL 35294, USA
Jonathan, E. Mitchell
Affiliation:
Materials Science & Technology Division, Oak Ridge National Laboratory (ORNL), Oak Ridge, TN 37831, USA
Athena Safa-Sefat
Affiliation:
Materials Science & Technology Division, Oak Ridge National Laboratory (ORNL), Oak Ridge, TN 37831, USA
Samuel Weir
Affiliation:
Mail Stop L-041, Lawrence Livermore National Laboratory (LLNL), Livermore, CA 94550, USA
Get access

Abstract

High pressure low temperature electrical resistance measurements were carried out on a series of 122 iron-based superconductors using a designer diamond anvil cell. These studies were complemented by image plate x-ray diffraction measurements under high pressures and low temperatures at beamline 16-BM-D, HPCAT, Advanced Photon Source. A common feature of the 1-2-2 iron-based materials is the observation of anomalous compressibility effects under pressure and a Tetragonal (T) to Collapsed Tetragonal (CT) phase transition under high pressures. Specific studies on antiferromagnetic spin-density-wave Ba0.5Sr0.5Fe2As2 and Ba(Fe0.9Ru0.1)2As2 samples are presented to 10 K and 41 GPa. The collapsed tetragonal phase was observed at a pressure of 14 GPa in Ba0.5Sr0.5Fe2As2 at ambient temperature. The highest superconducting transition temperature in Ba0.5Sr0.5Fe2As2 was observed to be at 32 K at a pressure of 4.7 GPa. The superconductivity was observed to be suppressed on transformation to the CT phase in 122 materials.

Keywords

superconductingphase transformationx-ray diffraction (XRD)
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1582: Symposium DDD – Extreme Environments—A Route to Novel Materials , 2013 , mrss13-1582-ddd02-02
Copyright
Copyright © Materials Research Society 2013 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Takahashi, H, Igawa, K, Arii, K, Kamihara, Y, Hirano, H and Hosono, H 2008 Nature.453, 376.CrossRefGoogle Scholar
Rotter, M, Tegel, M and Johrendt, D 2008 Phys. Rev.lett.101, 107006.CrossRefGoogle Scholar
Uhoya, W, Stemshorn, A, Tsoi, G, Vohra, Y K, Sefat, A S, Sales, B C, Hope, K M and Weir, S T 2010 Phys. Rev. B 82 144118 CrossRefGoogle Scholar
Mittal, R, Mishra, S K, Chaplot, S L, Ovsyannikov, S V, Greenberg, E, Trots, D M, Dubronvinsky, L, Su, Y, Brueckel, T, Matsuishi, S, Hosono, H and Garbarino, G 2011 Phys. Rev. B 83 054503 CrossRefGoogle Scholar
Colonna, N, Profeta, G, Continenza, A, and Massidda, S 2011 Phys. Rev. B 83, 094529.CrossRefGoogle Scholar
Mitchell, J E, Saparov, B, Lin, W, Calder, S, Li, Q, Kalinin, S V, Pan, M, Christianson, A D, Sefat, A S, Phys. Rev. B 86 174511.Google Scholar
Sharma, S, Bharathi, A, Chandra, S, Reddy, V R, Paulraj, S, Satya, A T, Sastry, V S, Gupta, A, Sundar, C S, Phys Rev B 81 174512.Google Scholar
Sefat, A S, Singh, D J, VanBebber, L H, Mozharivskyj, Y, McGuire, M A, Jin, R Y, Sales, B C, Keppens, V and Mandrus, D 2009 Phys. Rev. B 79 224524 CrossRefGoogle Scholar
Velisavljevic, N and Vohra, Y K 2004 High Press. Res. 24 295 CrossRefGoogle Scholar
Birch, F 1947 Phys. Rev. 71 809 CrossRefGoogle Scholar
Hammersley, A P 1995 Report No. EXP/AH/95–01 Google Scholar
Toby, B H 2001 J. Appl. Crystallogr. 34 210–3CrossRefGoogle Scholar
Bishop, M, Uhoya, W, Tsoi, G, Vohra, Y K, Sefat, A S and Sales, B 2010 J. Phys.: Condens. Matter 22 425701 Google Scholar
Kim, S K, Torikachvili, M S, Colombier, E, Thaler, A, Bud’ko, S L and Canfield, P C, 2011 Phys. Rev. B 84 134525 CrossRefGoogle Scholar
Tsoi, G M, Malone, W, Uhoya, W, Mitchell, J E, Vohra, Y K, Wenger, L E, Sefat, A.S. and Weir, S T 2012 J. Phys.: Condens. Matter 24, 495702.Google Scholar