کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9567313 | 1503713 | 2005 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
An empirical potential approach to dislocation formation and structural stability in GaNxAs1âx
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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![عکس صفحه اول مقاله: An empirical potential approach to dislocation formation and structural stability in GaNxAs1âx An empirical potential approach to dislocation formation and structural stability in GaNxAs1âx](/preview/png/9567313.png)
چکیده انگلیسی
We study the feasibility of our empirical potential to dislocation formation and its contribution to structural stability in GaNxAs1âx. The feasibility is exemplified by the calculations of the dislocation core energy and core radius for various dislocation core structures in wurtzite structured GaN. Moreover, we carry out theoretical analyses of the structural stability for GaNxAs1âx with dislocation whose core structure is described by five- and seven-coordinated channels (5/7 core) over the entire concentration range. The GaNxAs1âx changes its structure from zinc blende to wurtzite at the concentration for phase transition xc = 0.3 with dislocation and xc = 0.4 without dislocation. This is because the 5/7 core favors the wurtzite structured GaNxAs1âx with lower core energy than that in zinc blende structured GaNxAs1âx.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 244, Issues 1â4, 15 May 2005, Pages 182-185
Journal: Applied Surface Science - Volume 244, Issues 1â4, 15 May 2005, Pages 182-185
نویسندگان
Keiichi Kawamoto, Takashi Suda, Toru Akiyama, Kohji Nakamura, Tomonori Ito,