TITLE

Synthesis and transport property of AgSbTe2 as a promising thermoelectric compound

AUTHOR(S)
Heng Wang; Jing-Feng Li; Minmin Zou; Tao Sui
PUB. DATE
November 2008
SOURCE
Applied Physics Letters;11/17/2008, Vol. 93 Issue 20, p202106
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Polycrystalline AgSbTe2 ternary compound materials with high phase purity were fabricated using a combined process of mechanical alloying and spark plasma sintering. It was found that stoichiometric AgSbTe2 is a promising composition for low-and-mediate temperature applications, whose ZT reaches 1.59 at 673 K, benefiting from its extremely low thermal conductivity (0.30 W/mK) in addition to its low electrical resistivity (<1.1×10-4 Ω m) and large positive Seebeck coefficient (260 μV/K). On the other hand, deviating from this formula would lead to unstable phase structures and higher thermal conductivity, which make the samples less attractive as thermoelectric materials or components of thermoelectric systems.
ACCESSION #
35514115

 

Related Articles

  • Analytical theory for the description of powder systems under compression. Montes, J. M.; Cuevas, F. G.; Cintas, J. // Applied Physics A: Materials Science & Processing;Jun2010, Vol. 99 Issue 4, p751 

    In this work, a new theoretical approach to modelling some properties of powder systems under compression is presented. This new theoretical route consists of modelling an actual powder system (with particles of unequal size and irregular form) by means of a system of deforming spheres in a...

  • Variation of pinning mechanism and enhancement of critical current density in MgB2 bulk containing self-generated coherent MgB4 impurity. Cai, Qi; Liu, Yongchang; Ma, Zongqing; Li, Huijun; Yu, Liming // Applied Physics Letters;9/23/2013, Vol. 103 Issue 13, p132601 

    Bulk MgB2, with self-generated MgB4 pinning centers, have experienced two-step sintering process, initially at 750 °C and then 900-1000 °C. On the contrary to the widely accepted point that MgB4 deteriorates superconductivity, it was found that MgB4 played a significant role in enhancing...

  • Analysis of the formation of Al2O3 Fe nanocomposites. O. Goncharov; O. Nemtsova; I. Il’in // Glass Physics & Chemistry;Apr2009, Vol. 35 Issue 2, p210 

    Abstract  The formation of Al2O3 Fe nanocomposites (in the range 0–20 wt % Fe) in the course of three sequential processes, such as dispersion, compaction, and sintering at a temperature of 1573 K, is investigated. It is revealed that the sintering is accompanied by...

  • High-temperature electrical transport behaviors of the layered Ca2Co2O5-based ceramics. Jinle Lan; Yuan-Hua Lin; Guo-jing Li; Shaoliang Xu; Yong Liu; Ce-Wen Nan; Shu-Jin Zhao // Applied Physics Letters;5/10/2010, Vol. 96 Issue 19, p192104 

    Textured Bi-substituted Ca2Co2O5 ceramics have been prepared using a coprecipitation method combined with spark plasma sintering. The Bi substitution is effective in increasing the grain orientation of the Ca2Co2O5-based ceramics (from 0.46 to 0.85). Electrical conductivity increases obviously...

  • Effects of sample thickness on the van der Pauw technique for resistivity measurements. Kasl, C.; Hoch, M. J. R. // Review of Scientific Instruments;Mar2005, Vol. 76 Issue 3, p033907 

    The van der Pauw technique is commonly used for electrical transport measurements on solid materials and is suited to thin, arbitrarily shaped samples, with the contacts placed anywhere on the periphery. Previous investigations have determined the effects of sample shape, contact size, and...

  • Pulsed electric current sintering of electrically conductive ceramics. Vanmeensel, K.; Huang, S.; Laptev, A.; Salehi, S.; Swarnakar, A.; Biest, O.; Vleugels, J. // Journal of Materials Science;Oct2008, Vol. 43 Issue 19, p6435 

    The processing of yttria-stabilised zirconia (Y-ZrO2)-based ceramic nanocomposites by means of pulsed electric current sintering (PECS) is described. A nanometer-sized electrically conductive secondary TiCN phase was added to the insulating zirconia matrix in order to make the composite...

  • The accelerated formation of MgB2 phase with high critical current density by Cu and SiC multidoping during the low-temperature sintering process. Ma, Zongqing; Liu, Yongchang; Yu, Liming; Zhao, Qian // Journal of Applied Physics;Dec2008, Vol. 104 Issue 11, p113917 

    Combined with the thermal analysis and phase identification, it is found that during the low-temperature sintering process of the SiC-doped MgB2 samples, the Cu addition can improve both the reaction between Mg and B and the reaction between Mg and SiC and thus accelerate the formation of the...

  • Gyrotron-Based Source for Ceramics and Ion Stripping.  // Physics Today;Jul89, Vol. 42 Issue 7, p81 

    This article presents information regarding a microwave source for advanced ceramic sintering research from Varian. Aside from ceramic materials research, applications of the new microwave source include stripping electrons from heavy atoms in small magnetic-mirror devices called...

  • POROUS TUNGSTEN VIA REACTIVE SINTERING. Selcuk, Cem; Wood, John V. // International Journal of Powder Metallurgy;Mar/Apr2006, Vol. 42 Issue 2, p21 

    Provides information on a study that applied the basic concept of reactive sintering in order to reduce the sintering temperature and, consequently, the energy and cost in the production of parts from tungsten. Methodology of the study; Results and discussion of the study.

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics