Abstract
We have used a neutron powder diffraction method to study the structural changes in the Bi 2Sr 2Ca 1− x Eu x Cu 2O 8+ y compound caused by the partial substitution of Ca by Eu. Besides the systematic variation of the parameters of the orthorhombic 5.4 ÅX5.4 ÅX30.7 Å sub-cell, we observed atomic rearrangement in the BiO-layer and modifications in the square-pyramidal coordination polyhedra of the Cu ion. The onset temperature T onset as determined by the AC susceptibility method has a broad maximum at x = 0.3, and no superconductivity is observed at x = 0.6 in the temperature range T > 4.2 K. We discuss also about the reasons for the broadening of the transition range and the decrease of the Meissner fraction concomitant to the increase of the Eu concentration.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
