Small-Size-Induced Plasticity and Dislocation Activities on Non-Charge-Balanced Slip System of Ionic MgO Pillars

Ting Chun Lin; Chao Chun Yen; Shao Yi Lin; Yi Chung Huang; Chi Huan Tung; Yu Ting Hsiao; Shou Yi Chang

doi:10.1021/acs.nanolett.8b01826

Small-Size-Induced Plasticity and Dislocation Activities on Non-Charge-Balanced Slip System of Ionic MgO Pillars

Ting Chun Lin
, Chao Chun Yen
, Shao Yi Lin
, Yi Chung Huang
, Chi Huan Tung
, Yu Ting Hsiao
, Shou Yi Chang

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

We observed the small-size-induced hardening and plasticity of brittle ionic MgO as a result of abnormally triggered dislocation gliding on a non-charge-balanced slip system. The indentation tests of «111» MgO pillars revealed an increased hardness with decreasing pillar size, and the tips of the pillars that were ≤200 nm were plastically deformed. The in situ compression tests of «111» MgO nanopillars in transmission electron microscopy verified aligned dislocation-mediated plasticity on the {111}«110» and {100}«110» systems rather than the charge-balanced {110}«110» slip system.

Original language	English
Pages (from-to)	4993-5000
Number of pages	8
Journal	Nano Letters
Volume	18
Issue number	8
DOIs	https://doi.org/10.1021/acs.nanolett.8b01826
State	Published - Aug 8 2018
Externally published	Yes

Funding

The authors are grateful for the financial support for this research by the Ministry of Science and Technology (MOST), Taiwan, under grant nos. MOST 102-2221-E-007-150-MY3, MOST 106-2218-E-007-018, and MOST 107-3017-F-007-003 and partial funding by the “High Entropy Materials Center” of the Ministry of Education (MOE), Taiwan.

Keywords

Ionic nanopillar
dislocation activity
plasticity
size effect
slip system

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10.1021/acs.nanolett.8b01826

Cite this

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title = "Small-Size-Induced Plasticity and Dislocation Activities on Non-Charge-Balanced Slip System of Ionic MgO Pillars",

abstract = "We observed the small-size-induced hardening and plasticity of brittle ionic MgO as a result of abnormally triggered dislocation gliding on a non-charge-balanced slip system. The indentation tests of «111» MgO pillars revealed an increased hardness with decreasing pillar size, and the tips of the pillars that were ≤200 nm were plastically deformed. The in situ compression tests of «111» MgO nanopillars in transmission electron microscopy verified aligned dislocation-mediated plasticity on the \{111\}«110» and \{100\}«110» systems rather than the charge-balanced \{110\}«110» slip system.",

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doi = "10.1021/acs.nanolett.8b01826",

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AU - Lin, Ting Chun

AU - Yen, Chao Chun

AU - Lin, Shao Yi

AU - Huang, Yi Chung

AU - Tung, Chi Huan

AU - Hsiao, Yu Ting

AU - Chang, Shou Yi

PY - 2018/8/8

Y1 - 2018/8/8

N2 - We observed the small-size-induced hardening and plasticity of brittle ionic MgO as a result of abnormally triggered dislocation gliding on a non-charge-balanced slip system. The indentation tests of «111» MgO pillars revealed an increased hardness with decreasing pillar size, and the tips of the pillars that were ≤200 nm were plastically deformed. The in situ compression tests of «111» MgO nanopillars in transmission electron microscopy verified aligned dislocation-mediated plasticity on the {111}«110» and {100}«110» systems rather than the charge-balanced {110}«110» slip system.

AB - We observed the small-size-induced hardening and plasticity of brittle ionic MgO as a result of abnormally triggered dislocation gliding on a non-charge-balanced slip system. The indentation tests of «111» MgO pillars revealed an increased hardness with decreasing pillar size, and the tips of the pillars that were ≤200 nm were plastically deformed. The in situ compression tests of «111» MgO nanopillars in transmission electron microscopy verified aligned dislocation-mediated plasticity on the {111}«110» and {100}«110» systems rather than the charge-balanced {110}«110» slip system.

KW - Ionic nanopillar

KW - dislocation activity

KW - plasticity

KW - size effect

KW - slip system

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ER -

Small-Size-Induced Plasticity and Dislocation Activities on Non-Charge-Balanced Slip System of Ionic MgO Pillars

Abstract

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Keywords

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