کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1801675 1024574 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
EPR and magnetic susceptibility studies of iron ions in ZnO–Fe2O3–SiO2–CaO–P2O5–Na2O glasses
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
EPR and magnetic susceptibility studies of iron ions in ZnO–Fe2O3–SiO2–CaO–P2O5–Na2O glasses
چکیده انگلیسی

Room temperature electron paramagnetic resonance (EPR) spectra and temperature dependent magnetic susceptibility data have been obtained on bulk x(ZnO,Fe2O3)(65−x)SiO220(CaO, P2O5)15Na2O (6≤x≤21 mole%) glasses prepared by melt quenching method. EPR spectra of the glasses revealed absorptions centered at g≈2.1 and 4.3. The variations of the intensity and line width of these absorption lines with composition have been interpreted in terms of the variation in the concentration of the Fe2+ and Fe3+ ions in the glass and the interaction between the iron ions. EPR and magnetic susceptibility data of the glasses reveal that both Fe2+ and Fe3+ ions are present in the glasses, with their relative concentration being dependent on the glass composition. The studies reveal superexchange type interactions in these glasses, which are strongly dependent on their iron content.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 322, Issue 14, July 2010, Pages 2018–2022
نویسندگان
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