The alleviation of radiation-damage on Nb/MgO film driven by strain gradient in He ion irradiation

被引：7

作者：

Du, J. L. ^{[1
]}

Qiu, Y. H. ^{[1
]}

Zhang, J. ^{[2
]}

Huang, J. C. ^{[2
]}

Wu, Z. M. ^{[1
]}

Zhang, X. F. ^{[3
]}

Wang, Y. H. ^{[3
]}

Baldwin, Jon K. ^{[4
]}

Wang, Y. Q. ^{[4
,5
]}

Wang, Y. G. ^{[1
]}

Fu, E. G. ^{[1
]}

机构：

[1] Peking Univ, State Key Lab Nucl Phys & Technol, Sch Phys, Beijing 100871, Peoples R China

[2] Xiamen Univ, Inst Adv Nucl Energy, Coll Energy, Xiamen 361102, Peoples R China

[3] Univ Elect Sci & Technol, Zhongshan Inst, Zhongshan 528400, Peoples R China

[4] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87544 USA

[5] Los Alamos Natl Lab, Mat Sci & Technol, Los Alamos, NM 87544 USA

来源：

APPLIED SURFACE SCIENCE | 2019年 / 465卷

关键词：

Interface; Strain gradient; He bubble distribution; Alleviation of radiation damage; INTERFACE STRUCTURE; CRYSTAL INTERFACES; SPUTTERED CU/V; NB FILMS; HELIUM; MECHANISMS; DEFECTS;

D O I：

10.1016/j.apsusc.2018.09.174

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Interfaces are good traps for implanted He and radiation induced damage, and understanding the role of interfaces is important for designing highly radiation-resistant materials. In this article, Nb sheet and Nb film on MgO substrate (Nb/MgO) are irradiated by He ions, and it is found that the He bubble distribution along radiation depth between Nb sheet and Nb/MgO film is different. The comparison reveals that this difference is resulted from the diffusion of He atoms driven by strain gradient in Nb film close to Nb/MgO interface. This study could provide novel mechanisms for further understanding the interface enhancing radiation tolerance.

引用

页码：1014 / 1018

页数：5

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