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- Title
Mössbauer Study of a New Superconductor GdOFeAs.
- Authors
Korotkov, N.; Frolov, K.; Lyubutin, I.; Khlybov, E.; Pudalov, V.
- Abstract
The Fe-Mössbauer spectroscopy measurements on the polycrystalline superconductor GdOFFeAs with the bulk critical temperature T=53 K were carried out at temperatures between 5 and 300 K. Two nonequivalent Fe sites were revealed in the Fe-As superconducting planes. Iron ions show clear nonmagnetic behavior in all temperature ranges. There were no observed significant changes in the hyperfine Mössbauer parameters below and above T. The magnetic component appearing below 75 K indicates the presence of a small fraction of impurity phase FeAs.
- Subjects
MOSSBAUER spectroscopy; SUPERCONDUCTORS; GADOLINIUM compounds; POLYCRYSTALLINE semiconductors; SUPERCONDUCTING transition temperature; IRON-based superconductors
- Publication
Journal of Superconductivity & Novel Magnetism, 2013, Vol 26, Issue 9, p2877
- ISSN
1557-1939
- Publication type
Article
- DOI
10.1007/s10948-013-2211-7