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Shock Synthesis of Decagonal Quasicrystals

Oppenheim, J. and Ma, C. and Hu, J. and Bindi, L. and Steinhardt, P. J. and Asimow, P. D. (2017) Shock Synthesis of Decagonal Quasicrystals. Scientific Reports, 7 . Art. No. 15628. ISSN 2045-2322. PMCID PMC5688080.

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The Khatyrka meteorite contains both icosahedral and decagonal quasicrystals. In our previous studies, icosahedral quasicrystals have been synthesized and recovered from shock experiments at the interface between CuAl_5 and stainless steel 304 alloys. In this study, we report a new shock recovery experiment aimed at synthesizing decagonal quasicrystals similar to decagonite, natural Al_(71)Ni_(24)Fe_5. Aluminum 2024 and permalloy 80 alloys were stacked together and shocked in a stainless steel 304 recovery chamber. Abundant decagonal quasicrystals of average composition Al_(73)Ni_(19)Fe_4Cu_2Mg_(0.6)Mo_(0.4)Mn_(0.3) with traces of Si and Cr were found along the recovered interface between the Al and permalloy. The experiment also synthesized AlNiFe alloy with the B2 (CsCl-type) structure and the metastable Al_9Ni_2 phase. We present chemical (scanning electron microscopy and electron microprobe) and structural (electron backscatter diffraction and transmission electron microscopy) characterization of the recovered phases and discuss the implications of this shock synthesis for the stability of quasicrystals during high-pressure shocks and for the interpretation of the phase assemblage found in Khatyrka.

Item Type:Article
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URLURL TypeDescription CentralArticle
Oppenheim, J.0000-0002-5988-0677
Ma, C.0000-0002-1828-7033
Bindi, L.0000-0003-1168-7306
Asimow, P. D.0000-0001-6025-8925
Additional Information:© 2017 The Authors. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit Received: 18 August 2017; Accepted: 23 October 2017; Published online: 15 November 2017. JO was supported by Dr. George R. Rossman Summer Undergraduate Research Fellowship. The Caltech Lindhurst Laboratory of Experimental Geophysics and its staff members M. J. Burns and R. Oliver are supported by the National Science Foundation through award EAR-1426526. JH is supported by a grant from the Caltech/JPL President and Director’s Fund. We gratefully acknowledge support and infrastructure provided for this work by the Kavli Nanoscience Institute at Caltech. The Caltech GPS Division Analytical Facility is supported, in part, by NSF Grants EAR-0318518 and DMR-0080065. Author Contributions: J.O. and P.D.A. conceived and executed the experiments. J.O., J.H., and C.M. analyzed the run products. J.O., J.H., and P.D.A. wrote the manuscript and all co-authors edited the manuscript. The authors declare that they have no competing interests.
Group:Kavli Nanoscience Institute
Funding AgencyGrant Number
Caltech Summer Undergraduate Research Fellowship (SURF)UNSPECIFIED
JPL President and Director’s FundUNSPECIFIED
PubMed Central ID:PMC5688080
Record Number:CaltechAUTHORS:20171115-104605836
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:83224
Deposited By: Tony Diaz
Deposited On:15 Nov 2017 21:54
Last Modified:09 Mar 2020 13:19

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