PMID- 34859248 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20231103 IS - 2040-3372 (Electronic) IS - 2040-3364 (Print) IS - 2040-3364 (Linking) VI - 13 IP - 48 DP - 2021 Dec 16 TI - Irradiation stability and induced ferromagnetism in a nanocrystalline CoCrCuFeNi highly-concentrated alloy. PG - 20437-20450 LID - 10.1039/d1nr04915a [doi] AB - 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. FAU - Tunes, Matheus A AU - Tunes MA AUID- ORCID: 0000-0002-5988-5363 AD - Materials Science and Technology Division, Los Alamos National Laboratory, USA. tunes@lanl.gov. FAU - Greaves, Graeme AU - Greaves G AD - School of Computing and Engineering, University of Huddersfield, UK. FAU - Rack, Philip D AU - Rack PD AUID- ORCID: 0000-0002-9964-3254 AD - Joint Staff Center of Nanophase Materials Sciences, Oak Ridge National Laboratory, USA. AD - Materials Science and Engineering Department, University of Tennessee, USA. yzhang1@ornl.gov. FAU - Boldman, Walker L AU - Boldman WL AD - Materials Science and Engineering Department, University of Tennessee, USA. yzhang1@ornl.gov. FAU - Schon, Claudio G AU - Schon CG AUID- ORCID: 0000-0001-6506-5831 AD - Department of Metallurgical and Materials Engineering, Escola Politecnica, Universidade de Sao Paulo, Brazil. FAU - Pogatscher, Stefan AU - Pogatscher S AD - Chair of Nonferrous Metallurgy, Montanuniversitaet Leoben, Austria. FAU - Maloy, Stuart A AU - Maloy SA AD - Materials Science and Technology Division, Los Alamos National Laboratory, USA. tunes@lanl.gov. FAU - Zhang, Yanwen AU - Zhang Y AD - Materials Science and Engineering Department, University of Tennessee, USA. yzhang1@ornl.gov. AD - Materials Science and Technology Division, Oak Ridge National Laboratory, USA. FAU - El-Atwani, Osman AU - El-Atwani O AD - Materials Science and Technology Division, Los Alamos National Laboratory, USA. tunes@lanl.gov. LA - eng PT - Journal Article DEP - 20211216 PL - England TA - Nanoscale JT - Nanoscale JID - 101525249 SB - IM PMC - PMC8675024 COIS- The authors declare no conflict of interest. EDAT- 2021/12/04 06:00 MHDA- 2021/12/04 06:01 PMCR- 2021/12/03 CRDT- 2021/12/03 07:12 PHST- 2021/12/04 06:00 [pubmed] PHST- 2021/12/04 06:01 [medline] PHST- 2021/12/03 07:12 [entrez] PHST- 2021/12/03 00:00 [pmc-release] AID - d1nr04915a [pii] AID - 10.1039/d1nr04915a [doi] PST - epublish SO - Nanoscale. 2021 Dec 16;13(48):20437-20450. doi: 10.1039/d1nr04915a.