Magnetic and 119-Sn Mössbauer Effect Study of Sn-Doped Pb2Sr2Eu.5Cu3-xSnxO8+z (x = 0.0, 0.1) Superconductors*

Prem Vaishnava, Kettering University
C. D. Nelson
W. P. Pratt

Work supported by Center for Fundamental Material Research, Michigan State University, East Lansing, MI 48824

Abstract

X-ray diffraction, magnetic susceptibility and 119-Sn Mössbauer effect measurements have been performed on Pb₂Sr₂Eu_.5Cu_3-xSnx0_8+z (x = 0.0, 0.1) superconductors. The x-ray diffraction pattern indicated that the samples are single phase materials. The diamagnetic shielding and the Meissner fraction increase with the introduction of Sn in the lattice. The 119-Sn Mössbauer effect measurements have been used to determine the site symmetry and valence state of Sn atom in the superconductor.