Journal article
Disorder in Mn+1AXn phases at the atomic scale
Nature communications, v 10(1), 622
07 Feb 2019
PMID: 30733461
Abstract
Atomic disordering in materials alters their physical and chemical properties and can subsequently affect their performance. In complex ceramic materials, it is a challenge to understand the nature of structural disordering, due to the difficulty of direct, atomic-scale experimental observations. Here we report the direct imaging of ion irradiation-induced antisite defects in M(n+1)AX(n) phases using double CS-corrected scanning transmission electron microscopy and provide compelling evidence of order-to-disorder phase transformations, overturning the conventional view that irradiation causes phase decomposition to binary fccstructured Mn+1Xn. With the formation of uniformly distributed cation antisite defects and the rearrangement of X anions, disordered solid solution gamma-(M(n+1)A)X-n phases are formed at low ion fluences, followed by gradual transitions to solid solution fcc-structured (M(n+1)A)X-n phases. This study provides a comprehensive understanding of the order-to-disorder transformations in M(n+1)AX(n) phases and proposes a method for the synthesis of new solid solution (M(n+1)A)X-n phases by tailoring the disorder.
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Details
- Title
- Disorder in Mn+1AXn phases at the atomic scale
- Creators
- Chenxu Wang - Stanford UniversityTengfei Yang - Peking UniversityCameron L. Tracy - Stanford UniversityChenyang Lu - University of Michigan–Ann ArborHui Zhang - Monash UniversityYong-Jie Hu - Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USALumin Wang - University of Michigan–Ann ArborLiang Qi - University of Michigan–Ann ArborLin Gu - National Laboratory for SuperconductivityQing Huang - Ningbo Institute of Industrial TechnologyJie Zhang - Chinese Academy of SciencesJingyang Wang - Chinese Academy of SciencesJianming Xue - Peking UniversityRodney C. Ewing - Stanford UniversityYugang Wang - Peking University
- Publication Details
- Nature communications, v 10(1), 622
- Publisher
- NATURE PORTFOLIO
- Number of pages
- 9
- Grant note
- DE-SC0001089 / Energy Frontier Research Center "Materials Science of Actinides" - U.S. Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences; United States Department of Energy (DOE) ECCS-1542152 / National Science Foundation; National Science Foundation (NSF) DE-AC02-05CH11231 / Office of Science of the U.S. Department of Energy; United States Department of Energy (DOE) University of Michigan; University of Michigan System 2015GB113000 / National Magnetic Confinement Fusion Energy Research Project of China 11675005 / National Natural Science Foundation of China; National Natural Science Foundation of China (NSFC) Advanced Research Computing at the University of Michigan, Ann Arbor
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000458008700001
- Scopus ID
- 2-s2.0-85061251946
- Other Identifier
- 991021931899104721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary