| Автор | Shi Dan |
| Автор | L Y Xiong |
| Автор | C W Lung |
| Дата выпуска | 1990-02-26 |
| dc.description | The pyramidal dislocations and parallel basal dislocations induced from the deformation with compressive loading normal to the (0001) plane and to the (1012) plane of the Zn single-crystal specimen are observed by TEM. The positron lifetime experiments for the samples measured at 100 K yield two different trapping lifetimes. It is found that the lifetime tau <sub>d</sub> of positrons trapped and annihilated in basal dislocations lines increases by about 20% compared with that in bulk ( tau <sub>d</sub>=177+or-2 ps) and it is shown that a positron would be trapped in deeper traps (jogs) via the dislocation when the jog concentration along it is sufficiently high, with the annihilation lifetime close to that in a monovacancy. The intensities of the two trapping components decrease evidently with increase in temperature increasing to room temperature. The difference between positron-vacancy and positron-dislocation interactions are discussed. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | The positron-dislocation interaction studied in deformed zinc single crystals |
| Тип | paper |
| DOI | 10.1088/0953-8984/2/8/013 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 2 |
| Первая страница | 2073 |
| Последняя страница | 2079 |
| Аффилиация | Shi Dan; Inst. of Metal Res., Acad. Sinica, Shenyang, China |
| Аффилиация | L Y Xiong; Inst. of Metal Res., Acad. Sinica, Shenyang, China |
| Аффилиация | C W Lung; Inst. of Metal Res., Acad. Sinica, Shenyang, China |
| Выпуск | 8 |
