Journal article
Ion irradiation induced phase transformation in gold nanocrystalline films
SCIENTIFIC REPORTS, v 10(1), 17864
20 Oct 2020
PMID: 33082480
Abstract
Gold is a noble metal typically stable as a solid in a face-centered cubic (FCC) structure under ambient conditions; however, under particular circumstances aberrant allotropes have been synthesized. In this work, we document the phase transformation of 25 nm thick nanocrystalline (NC) free-standing gold thin-film via in situ ion irradiation studied using atomic-resolution transmission electron microscopy (TEM). Utilizing precession electron diffraction (PED) techniques, crystallographic orientation and the radiation-induced relative strains were measured and furthermore used to determine that a combination of surface and radiation-induced strains lead to an FCC to hexagonal close packed (HCP) crystallographic phase transformation upon a 10 dpa radiation dose of Au4+ ions. Contrary to previous studies, HCP phase in nanostructures of gold was stabilized and did not transform back to FCC due to a combination of size effects and defects imparted by damage cascades.
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Details
- Title
- Ion irradiation induced phase transformation in gold nanocrystalline films
- Publication Details
- SCIENTIFIC REPORTS, v 10(1), 17864
- Publisher
- NATURE RESEARCH; BERLIN
- Grant note
- Authors would like to acknowledge Douglas Medlin and Roger Doherty for their reviews and comments to strengthen the paper. M.L.T., P.K.S., and J.N. acknowledge funding in part from the United States Department of Energy (DOE), Basic Energy Sciences under the Early Career program through contract DE-SC0008274. M.L.T. and J.N. also acknowledge funding in part from United States Department of Energy, Basic Energy Sciences through contract DE-SC0020314. K.H. was supported by the DOE Office of Basic Energy Science, Materials Science and Engineering Division. This work was performed, in part, at the Center for Integrated Nanotechnologies, an Office of Science User Facility operated for the U.S. DOE Office of Science. Sandia National Laboratories is a multimission laboratory managed and operated by National Technology & Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International, Inc., for the U.S. DOE's National Nuclear Security Administration (NNSA) under contract DE-NA-0003525. The views expressed in the article do not necessarily represent the views of the U.S. DOE or the United States Government. Los Alamos National Laboratory, an affirmative action equal opportunity employer, is managed by Triad National Security, LLC for the U.S. DOE's NNSA, under contract 89233218CNA000001.
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Drexel University
- Web of Science ID
- WOS:000585239000038
- Scopus ID
- 2-s2.0-85092941826
- Other Identifier
- 991021860680904721
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- Collaboration types
- Industry collaboration
- Domestic collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary