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Microscale Seebeck Scanning of Polycrystalline Samples of N-Type AgPb<sub>18</sub>SbTe<sub>20</sub> and P-Type AgPb<sub>9</sub>Sn<sub>9</sub>SbTe<sub>20</sub>

Kosuga, Atsuko and Kurosaki, Ken and Muta, Hiroaki and Stiewe, Christian and Karpinski, Gabriele and Müller, Eckhard and Yamanaka, Shinsuke (2006) Microscale Seebeck Scanning of Polycrystalline Samples of N-Type AgPb<sub>18</sub>SbTe<sub>20</sub> and P-Type AgPb<sub>9</sub>Sn<sub>9</sub>SbTe<sub>20</sub>. Materials Transactions, 47 (6), pp. 1440-1444.

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Abstract

We prepared polycrystalline-sintered samples of n-type AgPb18SbTe20 and p-type AgPb9Sn9SbTe20 and performed the microscale Seebeck scanning examination under room temperature conditions. Despite both samples appeared to be homogeneous by Energy Dispersive X-ray (EDX) and X-ray Diffraction (XRD) analyses, both samples contained apparently a microscale distribution of the Seebeck coefficient as observed by Seebeck microprobe analysis. The degree of the Seebeck coefficient distribution became larger in the order of PbTe, AgPb18SbTe20, and AgPb9Sn9SbTe20, indicating that an increase in the number of compositional elements of the materials led to a broader distribution of the Seebeck coefficient values. The statistical analysis of the Seebeck coefficient distribution of p-type AgPb9Sn9SbTe20 indicated a homogeneous phase seemed to appear only at the lowest Seebeck coefficient values (slightly above 50 μV/K).

Item URL in elib:https://elib.dlr.de/45929/
Document Type:Article
Title:Microscale Seebeck Scanning of Polycrystalline Samples of N-Type AgPb<sub>18</sub>SbTe<sub>20</sub> and P-Type AgPb<sub>9</sub>Sn<sub>9</sub>SbTe<sub>20</sub>
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kosuga, AtsukoDSEEE, Graduate School of Engineering, Osaka University, JapanUNSPECIFIED
Kurosaki, KenDSEEE, Graduate School of Engineering, Osaka University, JapanUNSPECIFIED
Muta, HiroakiDSEEE, Graduate School of Engineering, Osaka University, JapanUNSPECIFIED
Stiewe, ChristianUNSPECIFIEDUNSPECIFIED
Karpinski, GabrieleUNSPECIFIEDUNSPECIFIED
Müller, EckhardUNSPECIFIEDUNSPECIFIED
Yamanaka, ShinsukeDSEEE, Graduate School of Engineering, Osaka University, JapanUNSPECIFIED
Date:15 June 2006
Journal or Publication Title:Materials Transactions
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
Volume:47
Page Range:pp. 1440-1444
Editors:
EditorsEmail
The Thermoelectrics Society of Japan, UNSPECIFIED
Status:Published
Keywords:thermoelectric materials, tellurides, thermoelectric properties, figure of merit, Seebeck coefficient, inhomogeneity, Seebeck microprobe
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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