Paper Title:
Fabrication and Thermoelectric Properties of p-Type Bi1Sb4Te7.5 Alloy Doped with Fe3O4
  Abstract

We investigated the effects of Fe3O4 (0~0.1 wt.%) on the thermoelectric properties of Bi1Sb4Te7.5 alloy prepared by mechanical alloying process. The Seebeck coefficient increased with Fe3O4 content, but the power factor decreased with Fe3O4 content because of the decreased electrical conductivity. The thermal conductivity decreased with Fe3O4. The carrier concentration measured by the Hall effect measurement decreased with Fe3O4. The thermal conductivity of 0.1 wt.% Fe3O4 alloy was 0.814 W/Km, 20%lower than that of Fe3O4 free alloy. As a result, the small addition of Fe3O4 improved the Z value owing to the decreased thermal conductivity by adding Fe3O4. The Z value of 0.01 wt.% Bi1Sb4Te7.5 alloy was 3.1×10-3 /K, the highest value among the prepared alloys.

  Info
Periodical
Materials Science Forum (Volumes 510-511)
Edited by
Hyung Sun Kim, Yu Bao Li and Soo Wohn Lee
Pages
1086-1089
DOI
10.4028/www.scientific.net/MSF.510-511.1086
Citation
W. K. Min, C. H. Lee, Y. H. Park, I. M. Park, "Fabrication and Thermoelectric Properties of p-Type Bi1Sb4Te7.5 Alloy Doped with Fe3O4", Materials Science Forum, Vols. 510-511, pp. 1086-1089, 2006
Online since
March 2006
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Xiao Ya Li, Yun Yu, Dong Li Wang, Li Dong Chen
Abstract:[Ca2(Co0.65Cu0.35)2O4]0.624CoO2 polycrystalline samples were prepared using sol-gel method followed by spark plasma sintering....
805
Authors: Sung Doo Hwang, Wang Kee Min, Ik Min Park, Young Do Park, Young Seok Kim, Yong Ho Park
Abstract:P-type thermoelectric material Si0.8Ge0.2 was fabricated by mechanical alloying(MA) and Hot-Press Process(HP) The effect of Boron(0.25~2wt%)...
745
Authors: Min Zhou, Jing Feng Li, Jing Liu
Abstract:The Bi2Te3 compound was synthesized by mechanical alloying (MA) of highly pure constituents of Bi and Te powders, and then was consolidated...
538
Authors: Kwan Ho Park, Il Ho Kim
Abstract:Co4-xFexSb12-ySny skutterudites were synthesized by mechanical alloying and hot pressing, and...
65
Authors: Zhen Chen, Ye Mao Han, Min Zhou, Rong Jin Huang, Yuan Zhou, Lai Feng Li
Abstract:In the present study, the glass microsphere dispersed Bi-Sb thermoelectric materials have been fabricated through mechanical alloying...
120