Vacancy-Vacancy Interaction in Copper
Overview & Synopsis
The binding energy of two vacancies in a static lattice as a function of their separation and the positions of their displaced neighboring atoms has been calculated using a Morse potential function model for copper. It was found that two vacancies attract one another at separation less than about 7 A. At separations greater than 7 A the vacancies do not interact appreciably. The most stable separation was found to be the first nearest- neighbor separation or the divacancy configuration, for which the binding energy was found to be 0.64 ev. Based on these calculations, it is shown that third-stage annealing in irradiated copper may be accounted for by divacancy migration. The role of the divacancy in copper self-diffusion is also explained.
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Document Information
| Document Title | Vacancy-Vacancy Interaction in Copper |
|---|---|
| Author / Organization | Girifalco, L. A., Weizer, V. G. |
| Subject & Discipline | REPRINT |
| Categories | Aerospace & Aviation |
| Publication Year | 2019 |
| License / Rights | Public Domain / NASA STI Open Access |
| Resource Verification | Listed PDF (Verification Pending) |
| Original Host Website |
NASA Technical Reports Server
(ntrs.nasa.gov)
|
| File Format | application/pdf (Portable Document Format) |
| Language | EN |
| Catalog ID | DOC-75339 |
| Original Source Link | Visit Source Page on ntrs.nasa.gov » |