Enhanced superconducting properties of Eu₂O₃-doped MgB₂
- Ojha, N. Department of Physics, Indian Institute of Technology Roorkee, India
- Malik, Vivek Kumar Department of Physics and Fribourg Centre for Nanomaterials-FriMat, University of Fribourg, Switzerland
- Bernhard, Christian Department of Physics and Fribourg Centre for Nanomaterials-FriMat, University of Fribourg, Switzerland -
- Varma, G.D. Department of Physics, Indian Institute of Technology Roorkee, India
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27.05.2009
Published in:
- Physica C: Superconductivity. - 2009, vol. 469, no. 14, p. 846-851
English
Bulk polycrystalline samples of Eu₂O₃-doped MgB₂ have been synthesized by a standard solid state reaction route and their structural and superconducting properties have been investigated. As a function of Eu₂O₃ content we have found a significant increase in the critical current density (Jc) and the irreversibility field (Hirr) in the magnetic field range 0–6 T. The XRD results reveal the presence of MgO and EuB₆ secondary phases along with the main hexagonal phase of MgB₂. The strain values and the lattice distortions have been found to increase almost linearly with the nominal Eu₂O₃ content. The observed significant improvement in Jc(H) and Hirr in the Eu₂O₃-doped MgB₂ samples, thus is mainly attributed to the lattice distortions introduced by Eu₂O₃ doping.
- Faculty
- Faculté des sciences et de médecine
- Department
- Département de Physique
- Language
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- English
- Classification
- Physics
- License
- License undefined
- Identifiers
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- RERO DOC 12664
- DOI 10.1016/j.physc.2009.05.014
- Persistent URL
- https://folia.unifr.ch/unifr/documents/301316
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