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Nanostructuring of Undoped ZnSb by Cryo-Milling

Song, X. J. and Valset, K. and Graff, J. S. and Thøgersen, A. and Gunnæs, A. and Luxsacumar, A. E. and Løvvik, O. M. and Snyder, G. J. and Finstad, T. G. (2015) Nanostructuring of Undoped ZnSb by Cryo-Milling. Journal of Electronic Materials, 44 (8). pp. 2578-2584. ISSN 0361-5235.

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We report the preparation of nanosized ZnSb powder by cryo-milling. The effect of cryo-milling then hot-pressing of undoped ZnSb was investigated and compared with that of room temperature ball-milling and hot-pressing under different temperature conditions. ZnSb is a semiconductor with favorable thermoelectric properties when doped. We used undoped ZnSb to study the effect of nanostructuring on lattice thermal conductivity, and with little contribution at room temperature from electronic thermal conductivity. Grain growth was observed to occur during hot-pressing, as observed by transmission electron microscopy and x-ray diffraction. The thermal conductivity was lower for cryo-milled samples than for room-temperature ball-milled samples. The thermal conductivity also depended on hot-pressing conditions. The thermal conductivity could be varied by a factor of two by adjusting the process conditions and could be less than a third that of single-crystal ZnSb.

Item Type:Article
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URLURL TypeDescription ReadCube access
Løvvik, O. M.0000-0002-4169-1544
Snyder, G. J.0000-0003-1414-8682
Additional Information:© 2015 The Minerals, Metals & Materials Society. Received September 9, 2014; accepted February 18, 2015; published online March 6, 2015. We thank Jaya Nolt of UCSB for performing XRD at different temperatures. X.S. is grateful for help with the rapid hot-press at California Institute of Technology (c/o Jeff Snyder) and use of high-temperature Hall setup. This work was supported by the Norwegian Research Council under contract NFR11-40-6321 (NanoThermo) and the University of Oslo. X.S. acknowledges financial support by a Kristine Bonnevie stipend from University of Oslo, a travel grant, and infrastructure grants from the Norwegian Nano-Network and from NorFab.
Funding AgencyGrant Number
Norwegian Research CouncilNFR11-40-6321
University of OsloUNSPECIFIED
Norwegian Nano-NetworkUNSPECIFIED
Subject Keywords:Nanostructuring; ZnSb; thermal conductivity; thermoelectric materials
Issue or Number:8
Record Number:CaltechAUTHORS:20150724-151406123
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Official Citation:Song, X., Valset, K., Graff, J. S., Thøgersen, A., Gunnæs, A. E., Luxsacumar, S., . . . Finstad, T. G. (2015). Nanostructuring of Undoped ZnSb by Cryo-Milling. Journal of Electronic Materials, 44(8), 2578-2584. doi: 10.1007/s11664-015-3708-6
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:59014
Deposited By: Jason Perez
Deposited On:25 Jul 2015 01:59
Last Modified:09 Mar 2020 13:19

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