• DocumentCode
    3337615
  • Title

    Some features of the conduction band structure, transport and optical properties of n-type Mg2Si-Mg2Sn alloys

  • Author

    Zaitsev, V.K. ; Fedorov, M.I. ; Burkov, A.T. ; Gurieva, E.A. ; Eremin, I.S. ; Konstantinov, P.P. ; Ordin, S.V. ; Sano, S. ; Vedernikov, M.V.

  • Author_Institution
    A.F. Ioffe Physicotech. Inst., Acad. of Sci., St. Petersburg, Russia
  • fYear
    2002
  • fDate
    25-29 Aug. 2002
  • Firstpage
    151
  • Lastpage
    154
  • Abstract
    Mg2SixSn1-x alloys are the perspective material for thermoelectric generators at moderate temperature. However the absence of reliable data on their band structure parameters does not permit to estimate a possible limit thermoelectric efficiency of these materials. According to the phase diagram there are two wide regions of solid solutions in pseudo-binary system Mg2SixSnl-x near the Mg2Si and Mg2Sn compounds. They are separated by a two-phase range (0.4 < x < 0.6). Here we shall report the results of the complex study of Hall and Seebeck coefficients (80 - 850 K), and optical spectra in plasma reflection interval (250 - 4500 cm-1) for n-type samples of various composition. The properties of each composition with different x were investigated in carrier concentration range varying from 5·1018 to 5·1020 cm-3. Combined analysis of kinetic and optical properties resulted in determination of conduction band basic parameters.
  • Keywords
    Hall effect; Seebeck effect; carrier density; conduction bands; infrared spectra; magnesium compounds; phase diagrams; semiconductor materials; solid solutions; thermoelectricity; visible spectra; Hall coefficient; Mg2Si-Mg2Sn; Mg2SixSnl-x; Seebeck coefficient; carrier concentration; conduction band structure; n-Mg2Si-Mg2Sn alloys; optical properties; optical spectra; phase diagram; pseudo-binary system; solid solutions; thermoelectric efficiency; thermoelectric material; transport properties; Conducting materials; Materials reliability; Optical materials; Optical reflection; Plasma properties; Plasma temperature; Silicon alloys; Solids; Thermoelectricity; Tin;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Thermoelectrics, 2002. Proceedings ICT '02. Twenty-First International Conference on
  • Print_ISBN
    0-7803-7683-8
  • Type

    conf

  • DOI
    10.1109/ICT.2002.1190287
  • Filename
    1190287
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3337615