کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1564546 | 999661 | 2006 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Driving forces on domain walls in ferroelectric materials and interaction with defects
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مکانیک محاسباتی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The driving force on a domain wall in a piezoelectric material is identified by using a variational principle. In addition to the domain wall, point defects are considered. These defects are modeled as electrically charged centers of dilatation (or contraction). For representative numerical simulations, the finite element method (FEM) is used. The simulations allow the analysis of the interaction of point defects and domain walls. It is found that point defects have the ability to reduce the driving force on the domain wall. This can potentially lead to the hindering of the domain wall mobility which is suspected to be a mechanism in electric fatigue.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computational Materials Science - Volume 35, Issue 1, January 2006, Pages 42-52
Journal: Computational Materials Science - Volume 35, Issue 1, January 2006, Pages 42-52
نویسندگان
R. Mueller, D. Gross, D.C. Lupascu,