Solid State Reaction Synthesis and Thermoelectric Properties of Ag-Doped Mg2Si0.8Ge0.2

Qiong Zhen Liu; Lian Meng Zhang; Qiang Shen; Hong Yi Jiang; Chuan Bin Wang

doi:10.4028/www.scientific.net/KEM.313.177

Paper Titles

Alumina/Glass Composites Fabricated by Melt-Infiltration of Glass into Porous Alumina
p.129

In-Situ Synthesis of Metal Matrix Composite Coating with Laser Melting-Solidifying Processes
p.139

The Microstructure, Mechanical and Dielectric Properties of CNTs/Mullite Ceramics Composites
p.145

Mechanical Behavior of a Hybrid Reinforced Magnesium Composite Fabricated by Pressure Infiltration Method
p.151

Wettability at Al-Mg/Ceramic Interfaces
p.159

Influence of Cu Content on Interfacial Structure and Mechanical Properties of 3Al₂O₃2SiO₂ Fiber Reinforced Al Matrix Composites
p.165

Fabrication by SPS and Thermophysical Properties of High Volume Fraction SiCp/Al Matrix Composites
p.171

Solid State Reaction Synthesis and Thermoelectric Properties of Ag-Doped Mg₂Si_0.8Ge_0.2
p.177

Environmental Performance Testing System for Thermostructure Materials Applied in Aeroengines
p.183

HomeKey Engineering MaterialsKey Engineering Materials Vol. 313Solid State Reaction Synthesis and Thermoelectric...

Solid State Reaction Synthesis and Thermoelectric Properties of Ag-Doped Mg₂Si_0.8Ge_0.2

Abstract:

By two-step solid state reaction, Mg2Si0.8Ge0.2 was successfully synthesized .The effect of Ag-doping concentration on the thermoelectric transport properties of p-type Mg2Si0.8Ge0.2 was investigated. With the increasing of Ag-doping concentration, the electrical conductivity σ and Seebeck coefficient α increase correspondingly over the measuring temperature range (300-800K).The peaks of the curves of Seebeck coefficient versus temperature shift towards the lower temperature .When the doping concentration of Ag is 16000ppm(nominal molar percent), the power factor P of Mg2Si0.8Ge0.2 reaches 4.4×10-4W/mK2 at 800K,obviously improved in comparison with the sample with no additive .

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Key Engineering Materials (Volume 313)

Pages:

177-182

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.313.177

Citation:

Cite this paper

Online since:

July 2006

Authors:

Qiong Zhen Liu, Lian Meng Zhang, Qiang Shen, Hong Yi Jiang, Chuan Bin Wang

Keywords:

Mg₂Si_0.8Ge_0.2, Solid-State Reaction, Thermoelectric Property

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] R. G. Morris. Semiconducting Properties of Mg2Si Single Crystal. Physical Review, Vol. 109, Num. 6, March 15, (1958).

Google Scholar

[2] N.D. Marchuk, V.K. Zaitsev, M.I. Fedorov and A.E. Kaliazin. Thermoelectric Properties of Some Cheap n-type Materials", Proceedings of the 8 th International Conference on Thermoelectric Energy Conversion and the 2nd European Conference on Thermoelectric, 1998, 210-214.

Google Scholar

[3] Cronin B. Vining, Silicide as promising thermoelectric materials, Proceedings of the 4th International Conference on Thermoelectric (USA), 1990, 249-259.

Google Scholar

[4] Y. Noda. Preparation and thermoelectric properties of Mg2Si1-XGeX (x=0. 0~0. 4) solid solution semiconductors. Materials Transactions, JIM Vol. 33, Iss. 9: 845-850.

Google Scholar

[5] Y. Noda.H. Kon.Y. Furukawa. Preparation and thermoelectric properties of Mg2Si1-XGeX Pro- ceedings of the 12 th International Conference on Thermoelectric Energy Conversion, Yokohama, Japan, p.260, (1993).

Google Scholar

[6] Michael C Nilacau. The magnesium silicide germanide stannide alloy: a new concept in thermoelectric energy. Proceedings of the fourth international conference on thermoelectric energy conversion, (1982), 83-86.

Google Scholar

[7] Hiroyuki Kon. Temperature dependence of thermal conductivity for Mg2Si1-XGeX solid solution . Yasutoshi Noda Proceedings of the 16 th International Conference on Thermoelectric Energy Conversion, 1997, 279-282.

Google Scholar

[8] T. Kajikawa, K. Shida and S. Sugihara etal, thermoelectric properties of Magnesium Silicide Processed by powdered elements plasma activated sintering method . Proceedings of the 16th International Conference on Thermoelectric Energy Conversion, 1997, 275-278.

DOI: 10.1109/ict.1997.667125

Google Scholar

[9] Cowell E M, Weiss Kopf V F. Phys. Rev, 1950, 77: 388.

Google Scholar

[10] R.J. Labotz, D.R. Mason and D.F. O'kane. The Thermoelectric Properties of Mixed Crystals of Mg2GeXSi1-x, Journal of the Electrochemical Society, 110(2), 1963, 127-134.

Google Scholar