Influence of Ag2Te on Transport Properties of (AgS-bTe2)0.9(PbTe)0.1
Keywords:thermoelectric material, endothermic effect, electrical conductivity, Seebeck coefficient, Hall coefficient
The transport properties of (AgSbTe2)0.9(PbTe)0.1, namely, the electrical conductivity and the Seebeck (S) and Hall (RH) coefficients, are studied in the temperature interval 80–560 K. An endothermic peak at 410 K is found by the differential scanning calorimetry (DSC). Sharp changes in the temperature dependences of the electrical conductivity and thermoelectric power in the region near 410 K are observed. The temperature dependence of Hall coefficient passes through maximum at ∼200 K and has negative sign. It is shown that, these peculiarities are due to the presence of the Ag2Te phase. The thermoelectric Z-factor has the maximum value of 2.7 × 10−3 K−1 at 400 K.
L.I. Anatychuk. Physics of Thermoelectricity (Bukrek, 2003), Vol. II (in Ukrainian) [ISBN 966-7854-55-8].
M.G. Kanatzidis. Nanostructured thermoelectrics: The new paradigm? Chem. Mater. 22, 648 (2010).
J. Sootsman, D.Y. Chung, M.G. Kanatzidis. New and old concepts in thermoelectric materials. Angew. Chem. Int. Ed. 48, 8616 (2009).
K.F. Hsu, S. Loo, F. Guo, W. Chen, J.S. Dyck, C. Uher, T. Hogan, E.K. Polychroniadis, M.G. Kanatzidis. Cubic AgPbmSbTe2+m: Bulk thermoelectric materials with high figure of merit. Science 303, 818 (2004).
S. Perlt, T. Hoche, J. Dadda, E. Muller, P.B. Pereira, R. Hermann, M. Sarahan, E. Pippel, R. Brydson. Microstructure analyses and thermoelectric properties of Ag1−xPb18Sb1+y Te20. J. Solid State Chem. 193, 58 (2012).
L.J. Wu, J.C. Zheng, J. Zhou, Q. Li, J.H. Yang, Y.M. Zhu. Nanostructures and defects in thermoelectric AgPb18SbTe20 single crystal. J. Appl. Phys. 105, 094317 (2009).
A.V. Dmitriev, I.P. Zvyagin. Current trends in the physics of thermoelectric materials. Physics-Uspekhi 53 (8), 789 (2010).
Y. Xiao, L-D. Zhao. Charge and phonon transport in PbTebased thermoelectric materials. npj Quantum Materials 55, 1 (2018).
S.A. Aliev, S.S. Ragimov. Thermoelectric Properties of Samples of the Ag-Sb-Te System. Inorganic Materials 28, 239 (1992).
S.S. Ragimov, A.E. Babayeva, A.I. Aliyeva. On the thermal conductivity of AgSbTe2 and Ag 0.82Sb1.18Te2.18. Low
Temperature Physics 44 (11), 1195 (2018).
H. Wang, J.F. Li, M. Zou, T. Sui. Synthesis and transport property of AgSbTe2 as a promising thermoelectric compound. Appl. Phys. Lett. 93, 202106 (2008).
S.S. Ragimov, S.A. Aliev. a → B phase transition of Ag2 in the AgSbTe2 alloy of the Ag-Sb-Te System. Inorg. Mater. 43 (11), 1184 (2007).
B. Du, H. Li, J. Xu, X. Tang, C. Uher. Enhanced figureof-merit in Se-doped p-type AgSbTe2 thermoelectric compound. Chem. Mater. 22, 5521 (2010).
S.A. Aliev, Z.F. Agaev, E.I. Zulfigarov. Charge transport in silver chalcogenides in the region of phase transition. Semiconductors 41, 1027 (2007).
V. Jovovic, J.P. Heremans. Measurements of the energy band gap and valence band structure of AgSbTe2. Phys. Rev. B 77, 245204 (2008).
How to Cite
License to Publish the Paper
The corresponding author and the co-authors (hereon referred to as the Author(s)) of the paper being submitted to the Ukrainian Journal of Physics (hereon referred to as the Paper) from one side and the Bogolyubov Institute for Theoretical Physics, National Academy of Sciences of Ukraine, represented by its Director (hereon referred to as the Publisher) from the other side have come to the following Agreement:
1. Subject of the Agreement.
The Author(s) grant(s) the Publisher the free non-exclusive right to use the Paper (of scientific, technical, or any other content) according to the terms and conditions defined by this Agreement.
2. The ways of using the Paper.
2.1. The Author(s) grant(s) the Publisher the right to use the Paper as follows.
2.1.1. To publish the Paper in the Ukrainian Journal of Physics (hereon referred to as the Journal) in original language and translated into English (the copy of the Paper approved by the Author(s) and the Publisher and accepted for publication is a constitutive part of this License Agreement).
2.1.2. To edit, adapt, and correct the Paper by approval of the Author(s).
2.1.3. To translate the Paper in the case when the Paper is written in a language different from that adopted in the Journal.
2.2. If the Author(s) has(ve) an intent to use the Paper in any other way, e.g., to publish the translated version of the Paper (except for the case defined by Section 2.1.3 of this Agreement), to post the full Paper or any its part on the web, to publish the Paper in any other editions, to include the Paper or any its part in other collections, anthologies, encyclopaedias, etc., the Author(s) should get a written permission from the Publisher.
3. License territory.
The Author(s) grant(s) the Publisher the right to use the Paper as regulated by sections 2.1.1–2.1.3 of this Agreement on the territory of Ukraine and to distribute the Paper as indispensable part of the Journal on the territory of Ukraine and other countries by means of subscription, sales, and free transfer to a third party.
4.1. This Agreement is valid starting from the date of signature and acts for the entire period of the existence of the Journal.
5.1. The Author(s) warrant(s) the Publisher that:
– he/she is the true author (co-author) of the Paper;
– copyright on the Paper was not transferred to any other party;
– the Paper has never been published before and will not be published in any other media before it is published by the Publisher (see also section 2.2);
– the Author(s) do(es) not violate any intellectual property right of other parties. If the Paper includes some materials of other parties, except for citations whose length is regulated by the scientific, informational, or critical character of the Paper, the use of such materials is in compliance with the regulations of the international law and the law of Ukraine.
6. Requisites and signatures of the Parties.
Publisher: Bogolyubov Institute for Theoretical Physics, National Academy of Sciences of Ukraine.
Address: Ukraine, Kyiv, Metrolohichna Str. 14-b.
Author: Electronic signature on behalf and with endorsement of all co-authors.