کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1813797 1025640 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of temperature on dielectric properties of Fe-doped CaCu3Ti4O12 ceramics
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Influence of temperature on dielectric properties of Fe-doped CaCu3Ti4O12 ceramics
چکیده انگلیسی

CaCu3Ti4−xFexO12 (0≤x≤0.2) ceramics were fabricated by a solid-state reaction method, and the dielectric properties were studied. Dielectric measurement performed at room temperature shows that with Fe content increasing from 0 to 0.2, the dielectric constant (ε′) decreases from about 5×104 to 50 in the frequency range from 1 kHz to 1 MHz, while ε′ of all Fe-doped samples at high temperature re-increased to a high level of 105 below 10 kHz, characterized by dielectric temperature spectrum. Interestingly, two dielectric relaxations named as I and II are observed with the increasing of temperature. In order to catch the intrinsic relaxation mechanism, the IBLC model and modulus approach are adopted to clarify these fantastic dielectric properties.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 405, Issue 1, 1 January 2010, Pages 386–389
نویسندگان
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