کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1619188 1005717 2011 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Variation in structural and dielectric properties of co-precipitated nanoparticles strontium ferrites due to value of pH
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Variation in structural and dielectric properties of co-precipitated nanoparticles strontium ferrites due to value of pH
چکیده انگلیسی

Nanoparticles of strontium ferrites with nominal composition SrFe12O19 were prepared by co-precipitation method, by decreasing pH from 13 to 8 with a regular step of 1. The secondary phase of α-Fe2O3 was increased with the decrease in pH. The crystallite size estimated from X-rays diffraction data was in the range 52–70 nm, which is much smaller than that already reported. Most of the particles formed had hexagonal structure, as observed by the scanning electron microscopy. Particle size and dielectric loss were increased where as dc electrical resistivity and dielectric constant were decreased with decrease in pH. The results show that the material synthesized with higher pH is phase pure and is potentially more suitable for high frequency applications.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 509, Issue 2, 12 January 2011, Pages 435–439
نویسندگان
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