Title :
The study of p-type material based on Sn-rich Mg2Si-Mg2Sn solid solution
Author :
Isachenko, G.N. ; Zaitsev, V.K. ; Fedorov, M.I. ; Gurieva, E.A. ; Eremin, I.S. ; Konstantinov, P.P. ; Vedernikov, M.V.
Author_Institution :
A.F. Ioffe Phys. Tech. Inst., St. Petersburg
Abstract :
In this paper the results of the study of transport properties of some Mg2SixSn1-x solid solutions are presented. The samples of various composition (Mg2SixSn1-x, x = 0.25-0.4) and of wide range of hole concentration (up to 5 1020 cm-3) have been prepared. Temperature dependences of Seebeck and Hall coefficients and electrical conductivity have been measured in the range from 80 up to 800 K. The parameters of band structure and conduction mechanism (energy gap, hole mobility and effective mass and the ratio of electron mobility to that of holes) were determined from these measurements. The features of band structure and conduction mechanism are discussed.
Keywords :
Hall effect; Seebeck effect; effective mass; electrical conductivity; electron mobility; energy gap; hole density; hole mobility; magnesium compounds; Hall coefficient; Mg2Si-Mg2Sn; Seebeck coefficient; band structure; conduction mechanism; effective mass; electrical conductivity; electron mobility; energy gap; hole concentration; hole mobility; solid solutions; temperature 80 K to 800 K; Charge carrier processes; Conducting materials; Conductivity measurement; Effective mass; Electric variables measurement; Electron mobility; Solids; Temperature dependence; Temperature distribution; Thermal conductivity;
Conference_Titel :
Thermoelectrics, 2007. ICT 2007. 26th International Conference on
Conference_Location :
Jeju Island
Print_ISBN :
978-1-4244-2262-3
Electronic_ISBN :
1094-2734
DOI :
10.1109/ICT.2007.4569471
