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Evidence of iso-structural phase transition in rhombohedral Bi-Sb alloy
K MALIK, D DAS, A K DEB, V SRIHARI, ,
Published in Institute of Physics Publishing
2016
Volume: 115
   
Issue: 5
Abstract
Temperature-dependent structural studies of polycrystalline Bi1-xSbx alloys were carried out using synchrotron x-ray diffraction. In-depth powder diffraction analysis reveals that an iso-structural phase transition takes place in the rhombohedral Bi-Sb alloy around 200 K, which is accompanied by anomalous behavior in the temperature-dependent linear thermal expansion data. In addition, the thermal variation of refined isotropic thermal parameters or Debye-Waller factor (B iso), ratio of the lattice parameters and Debye temperature indicates that anisotropy, arising due to local structural disorder, plays a significant role in this material. © 2016, EPLA.
About the journal
JournalEPL
PublisherInstitute of Physics Publishing
ISSN0295-5075