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Nanocrystals of the Quaternary Thermoelectric Materials: AgPb m SbTe m+2 (m = 1–18): Phase‐Segregated or Solid Solutions?
Author(s) -
Arachchige Indika U.,
Wu Jinsong,
Dravid Vinayak P.,
Kanatzidis Mercouri G.
Publication year - 2008
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200801116
Subject(s) - materials science , nanocrystal , annealing (glass) , colloid , chemical engineering , thermoelectric effect , phase (matter) , nanoparticle , nanotechnology , solid solution , quaternary , thermoelectric materials , thermodynamics , composite material , organic chemistry , metallurgy , thermal conductivity , paleontology , chemistry , physics , engineering , biology
Facile synthesis of a series of thermoelectrically relevant AgPb m SbTe m+2 ( m = 1–18) nanoparticles (see figure) is carried out by using a colloidal synthetic route. As‐synthesized nanocrystals are spherical in geometry and adopt a cubic NaCl‐type structure. These quaternary nanocrystals behave as solid solutions at room temperature and tend to phase separate into AgSbTe 2 and PbTe upon annealing at moderately high temperature.