Schürmann, Ulrich, Winkler, Markus, König, Jan D., Liu, Xi, Duppel, Viola, Bensch, Wolfgang, Böttner, Harald and Kienle, Lorenz (2011) In Situ TEM Investigations on Thermoelectric Bi2Te3/Sb2Te3 Multilayers. Advanced Engineering Materials, 14 (3). pp. 139-143. DOI 10.1002/adem.201100209.

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Abstract

In this work, the impact of heat treatment on the real structure of Bi2Te3/Sb2Te3 multilayers is investigated. The material was heated in situ in the transmission electron microscope (TEM) and ex situ inside a furnace after preparing these layers with the so-called nanoalloying deposition technique via molecular beam epitaxy (MBE) equipment. The samples were prepared as a lamella for TEM studies using focused ion beam technique. EDX elemental mapping and high angle annular dark field mode-STEM were performed to monitor changes of the morphology and interdiffusion phenomena after heating up to 2508C. A grain growth started during heating and the chemical layer structure was smeared out partly but remained in several grains and was found to be adjusted parallel to a major lattice plane in a crystallite. High resolution TEM shows polysynthetic twinning in a number of crystals.

Document Type:	Article
Research affiliation:	Kiel University Kiel University > Kiel Marine Science OceanRep > The Future Ocean - Cluster of Excellence
Refereed:	Yes
Open Access Journal?:	No
Publisher:	American Medical Association
Projects:	Future Ocean
Date Deposited:	12 Jun 2018 09:59
Last Modified:	23 Sep 2019 22:47
URI:	https://oceanrep.geomar.de/id/eprint/43316

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