Diffusion of Vacancies Created by High‐Energy Heavy Ion Strike Into Diamond
Diffusion of Vacancies Created by High‐Energy Heavy Ion Strike Into Diamond
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DOI：
10.1002/pssa.201700160
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发表时间：
2017-08
期刊：
影响因子：
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通讯作者：
S. Onoda;Kazumasa Tatsumi;M. Haruyama;T. Teraji;J. Isoya;W. Kada;T. Ohshima;O. Hanaizumi
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文献类型：
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作者：
S. Onoda;Kazumasa Tatsumi;M. Haruyama;T. Teraji;J. Isoya;W. Kada;T. Ohshima;O. Hanaizumi
提出了一种以亚微米分辨率测量空位从初始损伤区域扩散距离的新技术。考虑由单个高能重离子产生的空位。单离子轨道最重要的特征是具有高体积密度的准一维空位分布，空位数超过1019个cm−3。退火后，空位与氮杂质结合形成氮空位（NV）中心。随着退火温度和时间的增加，NV中心的分布变得更广。因此，单个重离子产生的空位适合研究空位扩散。确定了金刚石中空位迁移的活化能为2.12 eV，与文献报道值基本一致。
A novel technique is proposed to measure how far vacancies diffuse from the initial damaged region with sub‐micrometer resolution. Vacancies created by a single heavy ion with high energy are considered. The most important feature of the single ion track is the quasi‐one‐dimensional vacancy distribution with high volume density, which exceeds 1019 vacancies cm−3. After annealing, the vacancies combine with nitrogen impurities to form nitrogen vacancy (NV) centers. With increasing annealing temperature and time, the distribution of NV centers becomes wider. Therefore, the vacancies created by a single heavy ion are suitable to investigate vacancy diffusion. The activation energy of vacancy migration in diamond is determined to be 2.12 eV, which is in reasonable agreement with reported values.