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

机译:He离子辐照中应变梯度驱动下的Nb / MgO薄膜辐射损伤的缓解

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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.
机译:界面是植入氦气和辐射引起的损伤的良好陷阱,了解界面的作用对于设计高度抗辐射的材料很重要。本文用He离子辐照MgO基板上的Nb片和Nb膜(Nb / MgO),发现沿着Nb片和Nb / MgO膜之间的辐射深度,He气泡分布不同。比较表明,这种差异是由应变梯度驱动的He原子在接近Nb / MgO界面的Nb薄膜中扩散所致。这项研究可以提供新的机制,以进一步了解增强辐射耐受性的界面。

著录项

  • 来源
    《Applied Surface Science》 |2019年第28期|1014-1018|共5页
  • 作者单位

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

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

    Xiamen Univ, Inst Adv Nucl Energy, Coll Energy, Xiamen 361102, Peoples R China;

    Xiamen Univ, Inst Adv Nucl Energy, Coll Energy, Xiamen 361102, Peoples R China;

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

    Univ Elect Sci & Technol, Zhongshan Inst, Zhongshan 528400, Peoples R China;

    Univ Elect Sci & Technol, Zhongshan Inst, Zhongshan 528400, Peoples R China;

    Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87544 USA;

    Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87544 USA;

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

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

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Interface; Strain gradient; He bubble distribution; Alleviation of radiation damage;

    机译:界面;应变梯度;He气泡分布;减轻辐射损伤;

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