کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1812159 1025609 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electrical conductivity and dielectric properties of zinc substituted lithium ferrites prepared by sol–gel method
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Electrical conductivity and dielectric properties of zinc substituted lithium ferrites prepared by sol–gel method
چکیده انگلیسی

Polycrystalline zinc substituted lithium ferrites, Li0.5−x/2ZnxFe2.5−x/2O4 (where x=0.0, 0.2, 0.4, 0.6, 0.8 and 1.0), were prepared by sol–gel method. The samples were characterized by X-ray diffraction (XRD), DC electrical conductivity and dielectric studies. X-ray diffraction patterns of all the samples showed the single phase structure. DC conductivity and dielectric properties were investigated as a function of temperature and frequency at room temperature, respectively. DC conductivity of the samples increases as the temperature increases indicating that the samples have semiconductor like behavior. It is also found that the DC resistivity and dielectric constant of the lithium–zinc ferrites changes considerably with zinc content and the sintering temperatures. The variations of DC resistivity (ρdc) and dielectric constant (ε1) with zinc content are found to be opposite to each other. The possible mechanism for the influence of zinc on the electrical transport properties of lithium ferrites is discussed in this paper.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 405, Issue 7, 1 April 2010, Pages 1852–1856
نویسندگان
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