Effect of Pt on the electron-irradiation-induced decomposition of sapphire

C. L. Chen; K. Arakawa; H. Mori

doi:10.1016/j.scriptamat.2010.04.007

Effect of Pt on the electron-irradiation-induced decomposition of sapphire

C. L. Chen, K. Arakawa, H. Mori

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

8 Citations (Scopus)

Abstract

The effect of platinum on the electron-irradiation-induced decomposition of sapphire was investigated by in situ transmission electron microscopy. Comparison between the decomposition rates of pure sapphire and Pt-deposited sapphire revealed that the deposition of Pt considerably decreased the decomposition rate of sapphire under electron irradiation. These finds suggest Pt suppresses the interatomic Auger decay that occurs between Al³⁺ and O^2- ions, thereby decreasing the decomposition rate of sapphire.

Original language	English
Pages (from-to)	355-358
Number of pages	4
Journal	Scripta Materialia
Volume	63
Issue number	4
DOIs	https://doi.org/10.1016/j.scriptamat.2010.04.007
Publication status	Published - 2010 Aug

Keywords

Ceramics
Electron irradiation
Phase transformations
Transmission electron microscopy

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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title = "Effect of Pt on the electron-irradiation-induced decomposition of sapphire",

abstract = "The effect of platinum on the electron-irradiation-induced decomposition of sapphire was investigated by in situ transmission electron microscopy. Comparison between the decomposition rates of pure sapphire and Pt-deposited sapphire revealed that the deposition of Pt considerably decreased the decomposition rate of sapphire under electron irradiation. These finds suggest Pt suppresses the interatomic Auger decay that occurs between Al3+ and O2- ions, thereby decreasing the decomposition rate of sapphire.",

keywords = "Ceramics, Electron irradiation, Phase transformations, Transmission electron microscopy",

author = "Chen, {C. L.} and K. Arakawa and H. Mori",

note = "Funding Information: This study was supported by the Priority Assistance for the Formation of Worldwide Renowned Centers of Research – The Global COE Program (Project: Center of Excellence for Advanced Structural and Functional Materials Design) of the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan and partly by a Grant-in-Aid for Scientific Research (B) (21360309). Copyright: Copyright 2011 Elsevier B.V., All rights reserved.",

year = "2010",

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AU - Chen, C. L.

AU - Arakawa, K.

AU - Mori, H.

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PY - 2010/8

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N2 - The effect of platinum on the electron-irradiation-induced decomposition of sapphire was investigated by in situ transmission electron microscopy. Comparison between the decomposition rates of pure sapphire and Pt-deposited sapphire revealed that the deposition of Pt considerably decreased the decomposition rate of sapphire under electron irradiation. These finds suggest Pt suppresses the interatomic Auger decay that occurs between Al3+ and O2- ions, thereby decreasing the decomposition rate of sapphire.

AB - The effect of platinum on the electron-irradiation-induced decomposition of sapphire was investigated by in situ transmission electron microscopy. Comparison between the decomposition rates of pure sapphire and Pt-deposited sapphire revealed that the deposition of Pt considerably decreased the decomposition rate of sapphire under electron irradiation. These finds suggest Pt suppresses the interatomic Auger decay that occurs between Al3+ and O2- ions, thereby decreasing the decomposition rate of sapphire.

KW - Ceramics

KW - Electron irradiation

KW - Phase transformations

KW - Transmission electron microscopy

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