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Title: Nanoscale structure in AgSbTe2 determined by diffuse elastic neutron scattering

Diffuse elastic neutron scattering measurements confirm that AgSbTe2 has a hierarchical structure, with defects on length scales from nanometers to microns. While scattering from mesoscale structure is consistent with previously-proposed structures in which Ag and Sb order on a NaCl lattice, more diffuse scattering from nanoscale structure suggests a structural rearrangement in which hexagonal layers form a combination of (ABC), (ABA), and (AAB) stacking sequences. The AgCrSe2 structure is the best-fitting model for the local atomic arrangements.
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [2]
  1. ORNL
  2. Argonne National Laboratory (ANL)
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Conference: International Conference on Thermoelectrics - ICT2014, Nashville, TN, USA, 20140706, 20140706
Research Org:
Oak Ridge National Laboratory (ORNL); Spallation Neutron Source
Sponsoring Org:
SC USDOE - Office of Science (SC)
Country of Publication:
United States