Abstract
Ternary alloys of thermoelectric materials Bi–Sb–Te and Bi–Se–Te of molecular formula, Bi0·5Sb1·5Te3 (p type) and Bi0·36Se0·064Te0·576 (n type), were prepared by mechanical alloying method. The preparation of materials by mechanical alloying method has effectively reduced the thermal conductivity by generating a large number of induced grain boundaries with required degree of disorder. The process of frequent milling was adapted for grain refinement. Substantial reduction in thermal conductivity was achieved due to nano-structuring of these alloys. Thermal conductivity values were found to be very low at room temperature, 0·5 W/mK and 0·8 W/mK, respectively for p and n type materials.
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Balzar D and Ledbetter H 1993 J. Appl. Crystallogr. 26 97
Bhandari C M and Rowe D M 1983 J. Phys. D: Appl. Phys. L75 16
Bouad N, Marin-Ayral R M and Tedenac J C 2000 J. Alloys Compd. 297 312
Goldsmid H J 1995 Handbook of thermoelectrics (ed.) D M Rowe (Boca Raton, Florida: CRC Press) Ch. 3
Hyun D B, Oh T S and Hwang C W 1998 J. Mater. Sci. 33 5598
Ioffe A F 1960 Physics of semiconductors (London: Infosearch Limited)
Lan Y C, Minnich A J, Chen G and Ren Z F 2010 Adv. Funct. Mater. 20 357
Martin-Lopez R, Dauscher A and Scherrer H 1999 Appl. Phys. A 68 597
Mehta R J, Zhang Y, Karthik C, Singh B, Siegel R W, Tasciuc T B and Ramanath G 2012 Nat. Mater. 11 233
Pilchak A L et al 2007 Philos. Mag. 87 4567
Poudel B et al 2008 Science 320 634
Rowe D M, Shukla V S and Savvides N 1981 Nature 290 765
Rowe D M and Bhandari C M 1985 Appl. Phys. Lett. 47 256
Schilz J, Riffel M, Pixius K and Meyer H J 1999 Powder Technol. 105 149
Soni A, Yanyuan Z, Ligen Y, Khiam A M K, Dresselhaus M S and Xiong Q 2012 Nano Lett. 12 1203
Suryanarayana C 2001 Prog. Mater. Sci. 46 1
Wang Z, Alaniz J E, Jang W, Garay J E and Dames C 2011 Nano Lett. 11 2206
Warren B E and Averbach B L 1950 J. Appl. Phys. 21 595
Yan X et al 2011 Nano Lett. 11 556
Yang J Y, Aizawa T, Yamamoto A and Ohta T 2000 J. Alloys Compd. 312 326
Yang J Y, Aizawa T, Yamamoto A and Ohta T 2001 Mater. Chem. Phys. 70 90
Yang J Y, Chen R G, Fan X A, Bao S Q and Zhu W 2006a J. Alloys Compd. 407 330
Yang J Y, Fan X A, Chen R G, Zhu W, Bao S Q and Duan X K 2006b J. Alloys Compd. 41 270
Zhao H et al 2011 Appl. Phys. Letts 99 163101
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DUTTA, S., SHUBHA, V. & RAMESH, T.G. Reduction in thermal conductivity of Bi–Te alloys through grain refinement method. Bull Mater Sci 36, 853–857 (2013). https://doi.org/10.1007/s12034-013-0532-6
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DOI: https://doi.org/10.1007/s12034-013-0532-6