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Back Cover: Phys. Status Solidi RRL 8‐9/2010
Publication year - 2010
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201090010
Subject(s) - cover (algebra) , thermoelectric effect , crystallite , thermal conductivity , stoichiometry , condensed matter physics , materials science , analytical chemistry (journal) , physics , chemistry , thermodynamics , composite material , mechanical engineering , engineering , metallurgy , chromatography
In their Letter on p. 212 ff., Zhu and co‐workers at Zhejiang University report a modified induction melting method for rapidly synthesizing polycrystalline nonstoichiometric Yb 14 MnSb 11 compounds with improved thermoelectric properties. The carrier concentration can be finely tuned by changing the elemental ratio of Mn to Sb. An appropriate amount of Mn and Sb excess introduces point defects into the lattice, and hence decreases the lattice thermal conductivity. A maximum ZT value of 0.35 was obtained at 673 K for Yb 14 Mn 1.05 Sb 11 , significantly higher than that of stoichiometric polycrystalline Yb 14 MnSb 11 . The cover depicts a field emission scanning electron microscope image with elemental mapping for the sintered Yb 14 MnSb 11 sample, combined with the temperature dependence of the figure of merit for different samples.