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Effect of Small Amounts of Ni and Co Doping on p-type Al-doped Iron Disilicide

Chen, Haiyan and Zhao, XingBing and Stiewe, Christian and Platzek, Dieter and Müller, Eckhard (2006) Effect of Small Amounts of Ni and Co Doping on p-type Al-doped Iron Disilicide. In: Proceedings of the 4th European Conference on Thermoelectrics. 4th European Conference on Thermoelectrics, 9.-11. April 2006, Cardiff, Wales, UK.

Full text not available from this repository.

Abstract

Alloys of p-type iron disilicide FeAl0.04Si2.00 added with small amounts of n-type dopants Ni and Co Fe1-xMxAl0.04Si2 (M = Ni or Co) were prepared and characterized. Hall measurements in the temperature range of 25 – 300 K shows that the Hall concentration is between 5.9 ×1018 cm-3 and 1.5 ×1019 cm-3, and Hall mobility is within 5.4 – 18 cm2/Vs. The carrier concentration of FeAl0.04Si2.00 is reduced by partial compensation of Ni or Co. The mobility is slightly enhanced above 250 K by compensating doping of Ni or Al with Co. Thermoelectric properties were measured from room temperature up to 1000K. The electrical conductivity is decreased by the compensation doping, while Seebeck coefficient and thermal conductivity are increased. A reduction of the thermal conductivity as could be expected from alloying with an additional element is not observed. The maximum of the figure of merit (ZT = 0.11) is obtained at 830 K for uncompensated FeAl0.04Si2.00.

Item URL in elib:https://elib.dlr.de/45926/
Document Type:Conference or Workshop Item (Paper, Poster)
Title:Effect of Small Amounts of Ni and Co Doping on p-type Al-doped Iron Disilicide
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Chen, HaiyanUNSPECIFIEDUNSPECIFIED
Zhao, XingBingDepartment of Materials Science and Engineering, Zhejiang University, 310027 Hangzhou, P.R. ChinaUNSPECIFIED
Stiewe, ChristianUNSPECIFIEDUNSPECIFIED
Platzek, DieterUNSPECIFIEDUNSPECIFIED
Müller, EckhardUNSPECIFIEDUNSPECIFIED
Date:11 April 2006
Journal or Publication Title:Proceedings of the 4th European Conference on Thermoelectrics
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Editors:
EditorsEmail
Rowe, D.M.UNSPECIFIED
Status:Published
Keywords:thermoelectric materials, iron disilicide, doping
Event Title:4th European Conference on Thermoelectrics
Event Location:Cardiff, Wales, UK
Event Type:international Conference
Event Dates:9.-11. April 2006
Organizer:Cardiff School of Engineering
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Propulsion Systems (old)
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Virtual Engine and Validation Methods (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Structural and Functional Ceramics
Deposited By: Stiewe, Dr.rer.nat Christian
Deposited On:06 Dec 2006
Last Modified:27 Apr 2009 13:17

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