Thermoelectric performance of higher manganese silicide nanocomposites (Articolo in rivista)

Type
Label
  • Thermoelectric performance of higher manganese silicide nanocomposites (Articolo in rivista) (literal)
Anno
  • 2015-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.jallcom.2014.09.016 (literal)
Alternative label
  • Saleemi M.; Famengo A.; Fiameni S.; Boldrini S.; Battiston S.; Johnsson M.; Muhammed M.; Toprak M.S. (2015)
    Thermoelectric performance of higher manganese silicide nanocomposites
    in Journal of alloys and compounds
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Saleemi M.; Famengo A.; Fiameni S.; Boldrini S.; Battiston S.; Johnsson M.; Muhammed M.; Toprak M.S. (literal)
Pagina inizio
  • 31 (literal)
Pagina fine
  • 37 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.sciencedirect.com/science/article/pii/S0925838814021501 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 619 (literal)
Rivista
Note
  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1,7,8 :Department of Materials and Nano Physics, KTH Royal Institute of TechnologyKista, Stockholm, Sweden / 2-5 : CNR, Institute for Energetics and Interphases (IENI-CNR), Corso Stati Uniti 4Padua, Italy / 6 : Department of Materials and Environmental Chemistry, Stockholm UniversityStockholm, Sweden (literal)
Titolo
  • Thermoelectric performance of higher manganese silicide nanocomposites (literal)
Abstract
  • Higher manganese silicides (HMS) are proven to be promising candidates as p-type thermoelectric material in the temperature range of 400-700 K. In this work, a series of nanostructured (NS) bulk MnSi1.73with different levels of Ytterbium inclusions were fabricated via ball milling and the solid state reaction was completed by spark plasma sintering (SPS). Nanopowders and SPS consolidated Yb-HMS nanocomposites (NC) were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM) to reveal the crystal structure and morphology respectively. High resolution transmission electron microscopy (HRTEM) coupled with energy dispersive X-ray spectroscopy (EDS) was used to investigate the material composition in bulk grains. Yb was observed to stay as nanoinclusions at the grain boundaries. TE transport properties, including Seebeck coefficient, electrical resistivity, and thermal diffusivity as well as charge carrier concentrations were evaluated. Thermal conductivity decreased with increasing Yb content, while the electrical conductivity improved for the highest Yb content. A highest figure of merit (ZT) of 0.42 at 600 °C was achieved for 1% Yb-HMS NC sample. (literal)
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