HAADF-STEM observations of a Σ13 grain boundary in α-Al2O3 from two orthogonal directions

被引：11

作者：

Azuma, S. ^{[1
]}

Shibata, N. ^{[1
,2
]}

Findlay, S. D. ^{[1
]}

Mizoguchi, T. ^{[1
]}

Yamamoto, T. ^{[1
,3
]}

Ikuhara, Y. ^{[1
,3
,4
]}

机构：

[1] Univ Tokyo, Sch Engn, Inst Engn Innovat, Bunkyo Ku, Tokyo 1138656, Japan

[2] Japan Sci & Technol Agcy, PRESTO, Kawaguchi, Saitama 3320012, Japan

[3] Japan Fine Ceram Ctr, Nanostruct Res Lab, Atsuta Ku, Nagoya, Aichi 4568587, Japan

[4] Tohoku Univ, WPI Adv Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan

来源：

PHILOSOPHICAL MAGAZINE LETTERS | 2010年 / 90卷 / 08期

基金：

日本学术振兴会;

关键词：

Al2O3; alumina; grain boundary; HAADF-STEM; HAADF-STEM image simulation; TRANSMISSION ELECTRON-MICROSCOPY; ALUMINA BICRYSTALS; ATOMIC-STRUCTURE; INTERFACE; CHEMISTRY; CREEP; TWIN; DEFORMATION; CONTRAST; DENSITY;

D O I：

10.1080/09500831003630765

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Atomic structure of a Sigma 13, (10 (1) over bar4) grain boundary in alpha-Al2O3 was directly observed by aberration-corrected Z-contrast scanning transmission electron microscopy. Combining observations from two orthogonal directions parallel to the grain boundary plane ([1 (2) over bar 10] and [(2) over bar 021], the three-dimensional atomic configuration of the grain boundary core region can be determined, and proves to be in a good agreement with the stable boundary structure predicted by first-principles calculations.

引用

页码：539 / 546

页数：8

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