...
首页> 外文期刊>Nuclear instruments and methods in physics research >Grain growth and crack formation in NiO thin films by swift heavy ion irradiation
【24h】

Grain growth and crack formation in NiO thin films by swift heavy ion irradiation

机译:快速重离子辐照在NiO薄膜中晶粒长大和裂纹形成

获取原文
获取原文并翻译 | 示例
           

摘要

NiO thin films grown on Si(1 0 0) substrates by electron beam evaporation and sintered at 700 ℃, were irradiated by 120 MeV Au~(9+) ions. Though irradiation is known to induce lattice disorder and suppression of crystallinity, we observe grain growth at some fluences of irradiation. Associated with the growth of grains, the films develop cracks at a fluence of 3 × 10~(12) ions cm~(-2). The width of the cracks increased at higher fluences. Swift heavy ion irradiation induced atomic diffusion and strain relaxation in nanoparticle thin films, which are not in thermodynamic equilibrium, seem to be responsible for the observed grain growth. This phenomenon along with the tensile stress induced surface instability lead to crack formation in the NiO thin films.
机译:通过电子束蒸发在Si(1 0 0)衬底上生长并在700℃下烧结的NiO薄膜被120 MeV Au〜(9+)离子辐照。尽管已知辐照会引起晶格紊乱并抑制结晶度,但我们在辐照的一些通量下观察到晶粒生长。随着晶粒的生长,薄膜以3×10〜(12)离子cm〜(-2)的通量产生裂纹。通量越高,裂纹的宽度越大。快速的重离子辐照引起纳米颗粒薄膜中的原子扩散和应变松弛,这不是热力学平衡,似乎是观察到的晶粒长大的原因。这种现象与拉应力引起的表面不稳定性一起导致在NiO薄膜中形成裂纹。

著录项

  • 来源
  • 作者单位

    Department of Physics, North Orissa University, Baripada 757 003, India Department of Physics, Utkal University, Bhubaneswar 751 004, India;

    Department of Physics, Utkal University, Bhubaneswar 751 004, India;

    School of Material Science & Technology, Institute of Technology, BHU, Varanasi 221 005, India;

    Inter-University Accelerator Center, Aruna Asaf Ali Marg, Post Box No: 10502, New Delhi 110 067, India;

    Inter-University Accelerator Center, Aruna Asaf Ali Marg, Post Box No: 10502, New Delhi 110 067, India;

    Inter-University Accelerator Center, Aruna Asaf Ali Marg, Post Box No: 10502, New Delhi 110 067, India;

    Inter-University Accelerator Center, Aruna Asaf Ali Marg, Post Box No: 10502, New Delhi 110 067, India;

    Institute of Physics, Bhubaneswar 751 005, India;

    Department of Physics, Utkal University, Bhubaneswar 751 004, India;

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

    ion irradiation; nanoparticles; atomic force microscopy; crack; grain growth; NiO;

    机译:离子辐射纳米粒子原子力显微镜裂纹;谷物生长氧化镍;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号