Journal article

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
Department
Physique
Language
  • English
Classification
Physics
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Persistent URL
https://folia.unifr.ch/unifr/documents/301316
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