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  Discovery and Implications of Hidden Atomic-Scale Structure in a Metallic Meteorite

Kovács, A., Lewis, L. H., Palanisamy, D., Denneulin, T., Schwedt, A., Scott, E. R. D., et al. (2021). Discovery and Implications of Hidden Atomic-Scale Structure in a Metallic Meteorite. Nano Letters, 21(19), 8135-8142. doi:10.1021/acs.nanolett.1c02573.

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 Creators:
Kovács, András1, Author              
Lewis, Laura H.2, 3, Author
Palanisamy, Dhanalakshmi4, Author              
Denneulin, Thibaud1, Author
Schwedt, Alexander5, Author              
Scott, Edward R. D.6, Author
Gault, Baptiste4, 7, Author              
Raabe, Dierk8, Author              
Dunin-Borkowski, Rafal E.9, 10, Author              
Charilaou, Michalis11, Author
Affiliations:
1Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute 5, Forschungszentrum Jülich, 52425 Jülich, Germany, ou_persistent22              
2Department of Chemical Engineering, Northeastern University, Boston, Massachusetts 02115, United States, ou_persistent22              
3Department of Mechanical and Industrial Engineering, Northeastern University, Boston, Massachusetts 02115, United States, ou_persistent22              
4Atom Probe Tomography, Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863384              
5Gemeinschaftslabor für Elektronenmikroskopie (GFE), RWTH Aachen University, Aachen, Germany, ou_persistent22              
6Hawaii Institute of Geophysics and Planetology, University of Hawaii, Honolulu, Hawaii 96822, United States, ou_persistent22              
7Imperial College, Royal School of Mines, Department of Materials, London, SW7 2AZ, UK, ou_persistent22              
8Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863381              
9Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons, Forschungszentrum Jülich GmbH, Jülich, Germany, ou_persistent22              
10Peter Grünberg Institut, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany, ou_persistent22              
11Department of Physics, University of Louisiana at Lafayette, Lafayette, Louisiana 70504, United States, ou_persistent22              

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Free keywords: Binary alloys; Electron microscopy; Iron alloys; Magnetism; Metals, Atomic scale structures; Iron meteorites; Magnetism; Metallics; Micromagnetics; Modern civilization; Nanophases; Nanoprecipitate; Tetragonal iron; Tetrataenite, Meteorites
 Abstract: Iron and its alloys have made modern civilization possible, with metallic meteorites providing one of the human's earliest sources of usable iron as well as providing a window into our solar system's billion-year history. Here highest-resolution tools reveal the existence of a previously hidden FeNi nanophase within the extremely slowly cooled metallic meteorite NWA 6259. This new nanophase exists alongside Ni-poor and Ni-rich nanoprecipitates within a matrix of tetrataenite, the uniaxial, chemically ordered form of FeNi. The ferromagnetic nature of the nanoprecipitates combined with the antiferromagnetic character of the FeNi nanophases gives rise to a complex magnetic state that evolves dramatically with temperature. These observations extend and possibly alter our understanding of celestial metallurgy, provide new knowledge concerning the archetypal Fe-Ni phase diagram and supply new information for the development of new types of sustainable, technologically critical high-energy magnets. ©

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Language(s): eng - English
 Dates: 2021-10-13
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1021/acs.nanolett.1c02573
 Degree: -

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Title: Nano Letters
  Abbreviation : Nano Lett.
Source Genre: Journal
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Affiliations:
Publ. Info: Washington, DC : American Chemical Society
Pages: - Volume / Issue: 21 (19) Sequence Number: - Start / End Page: 8135 - 8142 Identifier: ISSN: 1530-6984
CoNE: https://pure.mpg.de/cone/journals/resource/110978984570403