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Atomic-Scale Interfacial Structure in Rock Salt and Tetradymite Chalcogenide Thermoelectric Materials

Medlin, D. L. and Snyder, G. J. (2013) Atomic-Scale Interfacial Structure in Rock Salt and Tetradymite Chalcogenide Thermoelectric Materials. JOM - Journal of the Minerals, Metals and Materials Society, 65 (3). pp. 390-400. ISSN 1047-4838. doi:10.1007/s11837-012-0530-y.

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Interfaces play important roles in the performance of nanostructured thermoelectric materials. However, our understanding of the atomic-scale structure of these interfaces is only beginning to emerge. In this overview article, we highlight and review several examples illustrating aspects of interfacial structure in the rock salt and tetradymite classes of chalcogenide materials. The chalcogenide compounds encompass some of the most successful and well-understood thermoelectric materials employed in actual application and are also relevant more broadly in diverse fields including phase-change memory materials, infrared radiation detection, and topological insulators. The examples we consider here focus in three areas: the influence of weak interlayer bonding on grain boundary structure in Bi_(2)Te_3, crystallographic alignment and interfacial coherency in rock salt and related cubic chalcogenides, and the structure of interfaces at tetradymite precipitates in a rock salt chalcogenide matrix. The complex interfaces in these systems can be understood and generalized by considering the similarities between the rock salt, tetradymite, and related structures and by analyzing of the relevant interfacial defects.

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Snyder, G. J.0000-0003-1414-8682
Additional Information:© 2013 TMS (outside the USA). Published online January 4, 2013. J. Lensch-Falk, P. Sharma, J. Sugar, C. Spataru, and N. Yang at Sandia and to N. Heinz and T. Ikeda at Caltech. G.J.S. thanks the AFOSR-MURI program for funding. Sandia National Laboratories is a multiprogram laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy’s National Nuclear Security Administration under Contract DE-AC04- 94AL85000. Support was provided in part by Sandia’s Laboratory-Directed Research and Development Program.
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Sandia Laboratory Directed Research and Development ProgramUNSPECIFIED
Department of Energy (DOE) National Nuclear Security AdministrationDE-AC04-94AL85000
Issue or Number:3
Record Number:CaltechAUTHORS:20130404-103802973
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:37765
Deposited On:04 Apr 2013 17:59
Last Modified:09 Nov 2021 23:31

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