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
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
A percolative ferroelectric–metal composite with hybrid dielectric dependence
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
نویسندگان
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