Sn-based type-VIII single-crystal clathrates with a large figure of merit

doi:10.1088/1674-1056/21/1/017401

Abstract Single-crystal samples of type-VIII Ba₈Ga_{16 - x}Cu_xSn₃₀ (x=0, 0.03, 0.06, 0.15) clathrates were prepared using the Sn-flux method. At room temperature the carrier density, n, is 3.5-5×10¹⁹ cm^-3 for all the samples, the carrier mobility, μ_H, increases to more than twice that of Ba₈Ga₁₆Sn₃₀ for all the Cu doping samples, and consequently the electrical conductivity is enhanced distinctly from 1.90×10⁴ S/m to 4.40×10⁴ S/m, with the Cu composition increasing from x=0 to x=0.15. The Seebeck coefficient, α , decreases slightly with the increases in Cu composition. The κ values are about 0.72 W/mK at 300 K and are almost invariant with temperature up to 500 K for the samples with x=0 and x=0.03. The lattice thermal conductivity, κ_L, decreases from 0.59 W/mK for x=0 to 0.50 W/mK for x=0.03 at 300 K. The figure of merit for x=0.03 reaches 1.35 at 540 K.

Keywords: thermoelectric material type-VIII clathrate thermoelectric properties

Received: 04 May 2011
Revised: 30 August 2011
Accepted manuscript online:

PACS:	74.25.F-	(Transport properties)
	72.15.Jf	(Thermoelectric and thermomagnetic effects)
	72.15.Eb	(Electrical and thermal conduction in crystalline metals and alloys)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 50902119).

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Deng Shu-Kang(邓书康), Li De-Cong(李德聪), Shen Lan-Xian(申兰先), Hao Rui-Ting(郝瑞亭), and T. Takabatake Sn-based type-VIII single-crystal clathrates with a large figure of merit 2012 Chin. Phys. B 21 017401

[1]	Zhang F P, Zhang X, Lu Q M and Zhang J X 2010 Acta Phys. Sin. 59 4211 (in Chinese)
[2]	Deng S K, Tang X F and Tang R S 2009 Chin. Phys. B 18 3084
[3]	Shi X, Kong H, Li C P, Uher C, Yang J, Salvador J R, Wang H, Chen L and Zhang W 2008 Appl. Phys. Lett. 92 182101
[4]	Zhao W Y, Dong C L, P Wei, Guan W, Liu L S, Zhai P C, Tang X F and Zhang Q J 2007 J. Appl. Phys. 102 113708
[5]	Nolas G S, Slack G A and Schujman S B 2000 Semiconductors and Semimetals (San Diego: Academic)
[6]	Li J C, Wang C L, Wang M X Peng H, Zhang R Z, Zhao M L, Liu J, Zhang J L and Mei L M 2009 J. Appl. Phys. 105 043503
[7]	Kuznetsov V L, Kuznetsova L A, Kaliazin A E and Rowe D M 2000 it J. Appl. Phys. 87 7871
[8]	Slack G A 1995 CRC Handbook of Thermoelectrics (Boca Raton: CRC Press)
[9]	Saramat A, Svensson G and Palmqvist A E C 2006 J. Appl. Phys. 99 023708
[10]	Kim J H, Norihiko L, Okamoto K K, Katsushi T and Haruyuki I 2006 Acta. Mater. 54 2057
[11]	Martin J, Wang H and Nolas G S 2008 Appl. Phys. Lett. 92 222110
[12]	May A F, Toberer E S, Saramat A and Snyder G J 2009 Phys. Rev. B 80 125205
[13]	Avila M A, Suekuni K, Umeo K, Fukuoka H, Yamanaka S and Takabatake T 2006 Phys. Rev. B 74 125109
[14]	Suekuni K, Avila M A, Umeo K, Fukuoka H, Yamanaka S, Nakagawa T and Takabatake T 2008 Phys. Rev. B 77 235119
[15]	Huo D, Sakata T, Sasakawa T, Avila M A, Tsubota M, Iga F, Fukuoka H, Yamanaka S, Aoyagi S and Takabatake T 2005 Phys. Rev. B 71 075113
[16]	Paschen S, Carrillo-Cabrera W, Bentien A, Tran V H, Baenitz M, Grin Y and Steglich F 2001 Phys. Rev. B 64 214404
[17]	Sasaki Y, Kishimoto K, Koyanagi T, Asada H and Akai K 2009 J. Appl. Phys. 105 073702
[18]	Kishimoto K, Ikeda N, Akai K and Koyanagi T 2008 Appl. Phys. Express 1 031201
[19]	Bentien A, Pacheco V, Paschen S, Grin Y and Steglich F 2005 Phys. Rev. B 71 165206
[20]	Phan M H, Woods G T, Chaturvedi A, Stefanoski S, Nolas G S and Srikant H 2008 Appl. Phys. Lett. 93 252505
[21]	Pacheco V, Bentien A, Carrillo-Cabrera W, Paschen S, Steglich F and Grin Y 2005 Phys. Rev. B 71 165205
[22]	Nolas G S, Cohn J L, Dyck J S, Uher C, Lamberton G A Jr and Tritt T M 2004 J. Mater. Res. 19 3556
[23]	Deng S K, Saiga Y, Suekuni K and Takabatake T 2010 J. Appl. Phys. 108 072705
[24]	Saiga Y, Suekunia K, Deng S K, Yamamoto T, Kono Y, Ohya N and Takabatake T 2010 J. Alloys Compd. 507 1
[25]	Goldsmid H J 2010 Introduction to Thermoelectricity (Berlin: Springer)

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Sn-based type-VIII single-crystal clathrates with a large figure of merit

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