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

doi:10.1088/1674-1056/24/3/037701

›› 2015, Vol. 24 ›› Issue (3): 37701-037701.doi: 10.1088/1674-1056/24/3/037701

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

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

章英^a, 黄红华^a, 刘晓山^a, 骆兴芳^a, 袁彩雷^a, 叶双莉^b

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

收稿日期:2014-06-26 修回日期:2014-10-16 出版日期:2015-03-05 发布日期:2015-03-05
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11164008, 51461019, 51361013, 11174226, and 51371129).

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

Zhang Ying (章英)^a, Huang Hong-Hua (黄红华)^a, Liu Xiao-Shan (刘晓山)^a, Luo Xing-Fang (骆兴芳)^a, Yuan Cai-Lei (袁彩雷)^a, Ye Shuang-Li (叶双莉)^b

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

Received:2014-06-26 Revised:2014-10-16 Online:2015-03-05 Published:2015-03-05
Contact: Yuan Cai-Lei E-mail:clyuan@jxnu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11164008, 51461019, 51361013, 11174226, and 51371129).

摘要/Abstract

摘要： 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.

关键词: strain, deformation, nanoparticles

Abstract: 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.

Key words: strain, deformation, nanoparticles

中图分类号: (Strain and interface effects)

77.80.bn

91.55.Mb (High strain deformation zones) 78.67.Bf (Nanocrystals, nanoparticles, and nanoclusters)

章英, 黄红华, 刘晓山, 骆兴芳, 袁彩雷, 叶双莉. Influence of strain distribution on the morphology evolution of a Ge/GeO₂ core/shell nanoparticle confined in ultrathin Al₂O₃ thinfilm by surface oxidation[J]. , 2015, 24(3): 37701-037701.

Zhang Ying (章英), Huang Hong-Hua (黄红华), Liu Xiao-Shan (刘晓山), Luo Xing-Fang (骆兴芳), Yuan Cai-Lei (袁彩雷), Ye Shuang-Li (叶双莉). Influence of strain distribution on the morphology evolution of a Ge/GeO₂ core/shell nanoparticle confined in ultrathin Al₂O₃ thinfilm by surface oxidation[J]. Chin. Phys. B, 2015, 24(3): 37701-037701.

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

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

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