Nb Substitution Effects on Superconducting Properties of Ru1−xNbxSr2Eu1.4Ce0.6Cu2O10−δ
Joint Authors
Matutes-Aquino, J. A.
Botello-Zubiate, M. E.
Maldonado-Mejía, J. L.
Quiz-Celestino, J. D.
Palomares-Sánchez, S. A.
Source
Advances in Condensed Matter Physics
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-5, 5 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-12-28
Country of Publication
Egypt
No. of Pages
5
Main Subjects
Abstract EN
In order to gain further insight into the role of substitution of Ru by Nb on superconductivity, polycrystalline samples of Ru1−xNbxSr2Eu1.4Ce0.6Cu2O10−δ (0.0 ≤ x ≤ 1.0) have been synthesized by solid-state reaction method.
Substitution of Nb at the Ru site in the system takes place isostructurally in the tetragonal structure (space group I4/mmm) with full solubility (x = 1.0).
Superconductivity exists for all compositions.
Resistivity measurements in function of temperature from 0 to 300 K were done using the four-probe technique.
It is found that the substitution of Ru5+ for Nb5+ depresses the superconductivity of samples from Tc = 29 K for x = 0.0 to Tc = 5 K for x = 1.0 (where Tc is the critical temperature, when resistivity becomes equal to zero).
In the normal state, the dependence of resistivity with temperature, for compositions with x = 0.0 and 0.2, shows a metallic behavior, while for compositions between x = 0.4 and x = 1 it shows a semiconducting behavior.
In that way, the density of charge carriers is reduced with niobium doping, leading to the semiconducting behavior.
The resistive transition to the superconducting state of all samples is found to be affected by granularity.
Samples undergo double superconducting transition.
American Psychological Association (APA)
Maldonado-Mejía, J. L.& Quiz-Celestino, J. D.& Botello-Zubiate, M. E.& Palomares-Sánchez, S. A.& Matutes-Aquino, J. A.. 2013. Nb Substitution Effects on Superconducting Properties of Ru1−xNbxSr2Eu1.4Ce0.6Cu2O10−δ. Advances in Condensed Matter Physics،Vol. 2013, no. 2013, pp.1-5.
https://search.emarefa.net/detail/BIM-473416
Modern Language Association (MLA)
Maldonado-Mejía, J. L.…[et al.]. Nb Substitution Effects on Superconducting Properties of Ru1−xNbxSr2Eu1.4Ce0.6Cu2O10−δ. Advances in Condensed Matter Physics No. 2013 (2013), pp.1-5.
https://search.emarefa.net/detail/BIM-473416
American Medical Association (AMA)
Maldonado-Mejía, J. L.& Quiz-Celestino, J. D.& Botello-Zubiate, M. E.& Palomares-Sánchez, S. A.& Matutes-Aquino, J. A.. Nb Substitution Effects on Superconducting Properties of Ru1−xNbxSr2Eu1.4Ce0.6Cu2O10−δ. Advances in Condensed Matter Physics. 2013. Vol. 2013, no. 2013, pp.1-5.
https://search.emarefa.net/detail/BIM-473416
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-473416