کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1815103 1525255 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of microstructure on the temperature dependence of relative initial permeability of NiCuZn ferrites
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Effects of microstructure on the temperature dependence of relative initial permeability of NiCuZn ferrites
چکیده انگلیسی

In the present work, ferrites with compositions of (Ni0.27Zn0.64Cux)Fe1.98O4 (x=0.1, 0.2) were prepared by conventional ceramic methods. The relationship between the microstructure and the temperature dependence of relative initial permeability was investigated. It was found that intergranular pores in the ferrites generate large demagnetizing fields, reducing the temperature dependence of the effective anisotropy field Heff, and decreasing the temperature dependence of the relative initial permeability accordingly. However, intragranular pores pin the movement of domain walls. Compared with the permeability induced by domain wall motion, the permeability that resulted from the spin rotation is more sensitive to temperature. As a result, the relative initial permeability of ferrites becomes more sensitive to temperature with increasing micropores within grains.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 400, Issues 1–2, 15 November 2007, Pages 119–123
نویسندگان
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