Streller, F, Agarwal, R, Mangolini, F et al. (1 more author) (2015) Novel Metal Silicide Thin Films by Design via Controlled Solid-State Diffusion. Chemistry of Materials, 27 (12). 4247 - 4253. ISSN 0897-4756
Abstract
In the quest to accelerate the discovery and deployment of new materials with ideal and tailored properties, synthesis via solid-state diffusion holds particular promise as it allows the crystal structure and stoichiometry of thin films to be controlled independently of the deposition method. However, the kinetics and the quality of the resulting materials remain relatively unexplored. Here we demonstrate both source-limited and kinetically-limited solid-state diffusion as novel routes to tune the stoichiometry of platinum silicide (PtxSi) thin films, representative of metal silicides which have attractive mechanical and electronic properties. Using in situ heating inside a transmission electron microscope (TEM) while performing electron diffraction, we show that both routes lead to stoichiometrically-controlled formation of PtxSi (x = 1, 2, 3) thin films with high phase selectivity, revealing the crystal structure and formation sequence for each phase. The PtxSi formation process from sequentially-deposited layers of platinum (Pt) and amorphous silicon (a-Si) significantly differs from the Pt/single-crystal silicon (sc-Si) case, allowing the formation of Pt3Si thin films for the first time.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2015, American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in Chemistry of Materials, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://dx.doi.org/10.1021/acs.chemmater.5b01413 |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mechanical Engineering (Leeds) > Institute of Functional Surfaces (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 20 Nov 2015 16:27 |
Last Modified: | 07 Jul 2016 09:47 |
Published Version: | http://dx.doi.org/10.1021/acs.chemmater.5b01413 |
Status: | Published |
Publisher: | American Chemical Society |
Identification Number: | 10.1021/acs.chemmater.5b01413 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:91819 |