From dislocation nucleation to dislocation multiplication in ceramic nanoparticle

Inas Issa; Lucile Joly-Pottuz; Jonathan Amodeo; David J. Dunstan; Claude Esnouf; Julien Réthoré; Vincent Garnier; Jérôme Chevalier; Karine Masenelli-Varlot

doi:10.1080/21663831.2021.1894253

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From dislocation nucleation to dislocation multiplication in ceramic nanoparticle

Original Report | 更新时间：2026-08-19

- From dislocation nucleation to dislocation multiplication in ceramic nanoparticle
- Materials Research Letters Vol. 9, Issue 6, Pages: 278-283(2021)
- 作者机构：
  
  1. e Department Materials Science Chair of Materials Physics Montanuniversität Leoben Jahnstrasse 12
  2. a Univ Lyon INSA Lyon UCBL CNRS MATEIS UMR,5510
  3. a Univ Lyon INSA Lyon UCBL CNRS MATEIS UMR Villeurbanne France,5510
  4. c Aix Marseille Univ Université de Toulon CNRS IM2NP
  5. d School of Physics and Astronomy Queen Mary University of London
  6. b Univ Lyon INSA Lyon CNRS LAMCOS UMR Villeurbanne France,5259
  7. f EC Nantes CNRS UMR GeM,6183
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2021.1894253
  CLC：
- Online First：05 March 2021，
  
  Published：2021
- 稿件说明：
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Inas Issa, Lucile Joly-Pottuz, Jonathan Amodeo, et al. From dislocation nucleation to dislocation multiplication in ceramic nanoparticle[J]. Materials Research Letters, 2021, 9(6): 278-283.
DOI：

Inas Issa, Lucile Joly-Pottuz, Jonathan Amodeo, et al. From dislocation nucleation to dislocation multiplication in ceramic nanoparticle[J]. Materials Research Letters, 2021, 9(6): 278-283. DOI： 10.1080/21663831.2021.1894253.

摘要

Abstract

Magnesium oxide nanocubes are compressed along the [001

]

direction

in situ

in the transmission electron microscope. Incipient plasticity in the smaller samples is characterized by the nucleation of few 1/2110{110} dislocations while a larger number of line defects is observed in larger nanocubes. Yield and flow stresses scattered stochastically above a minimum value varying as the inverse of the sample size. The upper bound is given by the reduced number of dislocation sources. Such size-dependent behaviour is justified by a detailed statistical analysis and is fully explained by the deformation mechanism.

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Related Institution

a Key Laboratory of Multifunctional Nanomaterials and Smart Systems Division of Advanced Materials Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences

d Ji Hua Laboratory

c Department of Material Physics and Chemistry University of Science and Technology Beijing

b Institute of Microstructure and Property of Advanced Materials Beijing University of Technology

a Key Laboratory of Multifunctional Nanomaterials and Smart Systems Division of Advanced Materials Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences Suzhou People’s Republic of China

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