Ojha, N. Malik, Vivek Kumar Bernhard, Christian Varma, G.D. 2009-05-27 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 (<i>J</i>_c) and the irreversibility field (<i>H</i>_irr) 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 <i>J</i>_c(<i>H</i>) and <i>H</i>_irr in the Eu₂O₃-doped MgB₂ samples, thus is mainly attributed to the lattice distortions introduced by Eu₂O₃ doping. application/pdf https://folia.unifr.ch/global/documents/301316 https://folia.unifr.ch/documents/301316/files/bernhard_esp.pdf eng info:eu-repo/semantics/altIdentifier/doi/10.1016/j.physc.2009.05.014 info:eu-repo/semantics/openAccess License undefined Physica C: Superconductivity. - 2009, vol. 469, no. 14, p. 846-851 MgB₂ superconductor Solid state reaction X-ray diffraction Flux pinning Critical current density info:eu-repo/classification/udc/53 Enhanced superconducting properties of Eu₂O₃-doped MgB₂ http://purl.org/coar/resource_type/c_6501