کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5436698 | 1398143 | 2017 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Comportamiento ferroeléctrico de una nanoesfera de titanato de plomo debido a campos de despolarización y a esfuerzos mecánicos
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Comportamiento ferroeléctrico de una nanoesfera de titanato de plomo debido a campos de despolarización y a esfuerzos mecánicos Comportamiento ferroeléctrico de una nanoesfera de titanato de plomo debido a campos de despolarización y a esfuerzos mecánicos](/preview/png/5436698.png)
چکیده انگلیسی
A theorical model has been developed based on the theory of Ginzburg-Landau-Devonshire to study and predict the effects the decreasing of size particle in a nanosphere of PbTiO3 subjected to the action of depolarization fields and mechanical stress. It was considered that the nanosphere is surrounded by a layer of space charges on its surface, and containing 180° domains generated by minimizing free energy of depolarization. Energy density of depolarization, wall domain and electro-elastic energy have been incorporated into the free energy of the theory Ginzburg-Landau-Devonshire. Free energy minimization was performed to determine the spontaneous polarization and transition temperature system. These results show that the transition temperature for nanosphere is substantially smaller than the corresponding bulk material. Also, it has been obtained that the stability of the ferroelectric phase of nanosphere is favored for configurations with a large number of 180° domains, with the decreasing of thickness space charge layer, and the application of tensile stress and decreases with compressive stress.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: BoletÃn de la Sociedad Española de Cerámica y Vidrio - Volume 56, Issue 1, JanuaryâFebruary 2017, Pages 19-28
Journal: BoletÃn de la Sociedad Española de Cerámica y Vidrio - Volume 56, Issue 1, JanuaryâFebruary 2017, Pages 19-28
نویسندگان
Julio Andrade Landeta, Luis Lascano,