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Parkin C, Kotula P, Podlevsky J, Chacon C, Chiu E, Grutzik S, Rezwan A, Janicki T, Lane JMD, Lim H, Bishop C, Hattar K. Effect of Dopants, Impurities, and Substrate on Anomalous Crystallization of SiN. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2023; 29:1470-1471. [PMID: 37613606 DOI: 10.1093/micmic/ozad067.755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Affiliation(s)
- Calvin Parkin
- Sandia National Laboratories, Albuquerque, NM, United States
| | - Paul Kotula
- Sandia National Laboratories, Albuquerque, NM, United States
| | | | - Carlos Chacon
- Sandia National Laboratories, Albuquerque, NM, United States
| | - Edwin Chiu
- Sandia National Laboratories, Albuquerque, NM, United States
| | - Scott Grutzik
- Sandia National Laboratories, Albuquerque, NM, United States
| | - Aashique Rezwan
- Sandia National Laboratories, Albuquerque, NM, United States
| | - Tesia Janicki
- Sandia National Laboratories, Albuquerque, NM, United States
| | | | - Hojun Lim
- Sandia National Laboratories, Albuquerque, NM, United States
| | - Chris Bishop
- Sandia National Laboratories, Albuquerque, NM, United States
| | - Khalid Hattar
- Sandia National Laboratories, Albuquerque, NM, United States
- Department of Nuclear Engineering, University of Tennessee-Knoxville, Knoxville, TN, United States
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Tunes MA, Greaves G, Rack PD, Boldman WL, Schön CG, Pogatscher S, Maloy SA, Zhang Y, El-Atwani O. Irradiation stability and induced ferromagnetism in a nanocrystalline CoCrCuFeNi highly-concentrated alloy. NANOSCALE 2021; 13:20437-20450. [PMID: 34859248 PMCID: PMC8675024 DOI: 10.1039/d1nr04915a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 09/29/2021] [Indexed: 05/04/2023]
Abstract
In the field of radiation damage of crystalline solids, new highly-concentrated alloys (HCAs) are now considered to be suitable candidate materials for next generation fission/fusion reactors due to recently recorded outstanding radiation tolerance. Despite the preliminarily reported extraordinary properties, the mechanisms of degradation, phase instabilities and decomposition of HCAs are still largely unexplored fields of research. Herein, we investigate the response of a nanocrystalline CoCrCuFeNi HCA to thermal annealing and heavy ion irradiation in the temperature range from 293 to 773 K with the objective to analyze the stability of the nanocrystalline HCA in extreme conditions. The results led to the identification of two regimes of response to irradiation: (i) in which the alloy was observed to be tolerant under extreme irradiation conditions and (ii) in which the alloy is subject to matrix phase instabilities. The formation of FeCo monodomain nanoparticles under these conditions is also reported and a differential phase contrast study in the analytical electron-microscope is carried out to qualitatively probe its magnetic properties.
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Affiliation(s)
- Matheus A Tunes
- Materials Science and Technology Division, Los Alamos National Laboratory, USA.
| | - Graeme Greaves
- School of Computing and Engineering, University of Huddersfield, UK
| | - Philip D Rack
- Joint Staff Center of Nanophase Materials Sciences, Oak Ridge National Laboratory, USA
- Materials Science and Engineering Department, University of Tennessee, USA.
| | - Walker L Boldman
- Materials Science and Engineering Department, University of Tennessee, USA.
| | - Cláudio G Schön
- Department of Metallurgical and Materials Engineering, Escola Politécnica, Universidade de São Paulo, Brazil
| | | | - Stuart A Maloy
- Materials Science and Technology Division, Los Alamos National Laboratory, USA.
| | - Yanwen Zhang
- Materials Science and Engineering Department, University of Tennessee, USA.
- Materials Science and Technology Division, Oak Ridge National Laboratory, USA
| | - Osman El-Atwani
- Materials Science and Technology Division, Los Alamos National Laboratory, USA.
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