Influence of strain distribution on the morphology evolution of a Ge/GeO2 core/shell nanoparticle confined in ultrathin Al2O3 thin film by surface oxidation

The influence of strain distribution on morphology evolution of Ge/GeO2 core/shell nanoparticle confined in ultrathin Al2O3 thin film by surface oxidation is investigated. A finite-element simulation is performed to simulate the morphology evolution of the confined Ge/GeO2 core/shell nanoparticle un...

Full description

Saved in:
Bibliographic Details
Published in中国物理B：英文版 no. 3; pp. 380 - 383
Main Author 章英 黄红华 刘晓山 骆兴芳 袁彩雷 叶双莉
Format Journal Article
LanguageEnglish
Published 01.03.2015
Subjects
Al2O3薄膜
GeO2
二氧化锗
密闭
应变分布
形态演变
纳米颗粒
表面氧化
Online AccessGet full text
ISSN1674-1056
2058-3834
DOI10.1088/1674-1056/24/3/037701

Cover

More Information
Summary:The influence of strain distribution on morphology evolution of Ge/GeO2 core/shell nanoparticle confined in ultrathin Al2O3 thin film by surface oxidation is investigated. A finite-element simulation is performed to simulate the morphology evolution of the confined Ge/GeO2 core/shell nanoparticle under the influence of the local strain distribution. It indicates that the resultant oxidation-related morphology of Ge/GeO2 core/shell nanoparticle confined in ultrathin film is strongly dependent on the local strain distribution. On the other hand, the strain gradients applied on the confined GeO2 shell can be modified by the formation of polycrystalline GeO2 shell, which has potential application in tailoring the microstructure and morphology evolution of the Ge/GeO2 core/shell nanoparticle.
Bibliography:Zhang Ying, Huang Hong-Hua, Liu Xiao-Shan, Luo Xing-Fang, Yuan Cai-Lei, and Ye Shuang-Li（ a） Laboratory of Nanomaterials and Sensors, School of Physics, Electronics and Communication, Jiangxi Normal University, Nanchang 330022, China; b）institute of Microelectronics and Information Technology, Wuhan University, Wuhan 430072, China
strain,deformation,nanoparticles
The influence of strain distribution on morphology evolution of Ge/GeO2 core/shell nanoparticle confined in ultrathin Al2O3 thin film by surface oxidation is investigated. A finite-element simulation is performed to simulate the morphology evolution of the confined Ge/GeO2 core/shell nanoparticle under the influence of the local strain distribution. It indicates that the resultant oxidation-related morphology of Ge/GeO2 core/shell nanoparticle confined in ultrathin film is strongly dependent on the local strain distribution. On the other hand, the strain gradients applied on the confined GeO2 shell can be modified by the formation of polycrystalline GeO2 shell, which has potential application in tailoring the microstructure and morphology evolution of the Ge/GeO2 core/shell nanoparticle.
11-5639/O4
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/24/3/037701