کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1501874 | 993398 | 2007 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A percolative ferroelectric–metal composite with hybrid dielectric dependence
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
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چکیده انگلیسی
The hybrid dielectric dependence of a percolative ferroelectric–metal composite is investigated by analyzing BaTiO3–Ni composite prepared by a conventional ceramic method. It is depicted by a novel theoretical expression that exhibits the relationships between the real permittivity, metal concentration and applied frequency of the system. Both the dipolar response and the space charge polarization contribute to the dielectric constant, especially near the percolation threshold. With decreasing conductivity of the BaTiO3 matrix, the dependence of the dielectric constant on frequency decreases, especially at low frequency and near the percolation threshold.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Scripta Materialia - Volume 57, Issue 10, November 2007, Pages 921–924
Journal: Scripta Materialia - Volume 57, Issue 10, November 2007, Pages 921–924
نویسندگان
Zuhuang Chen, Jiquan Huang, Qian Chen, Chenglu Song, Gaorong Han, Wenjian Weng, Piyi Du,