کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9829526 1524493 2005 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optical and magnetic properties of ZnS nanoparticles doped with Mn2+
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Optical and magnetic properties of ZnS nanoparticles doped with Mn2+
چکیده انگلیسی
ZnS:Mn nanoparticles of the cubic zinc blende structure with the average sizes of about 3 nm were synthesized using a coprecipitation method and their optical and magnetic properties were investigated. Two emission bands were observed in doped nanoparitcles and attributed to the defect-related emission of ZnS and the Mn2+ emission, respectively. With the increase of Mn2+ concentration, the luminescence intensities of these two emission bands increased and the ZnS emission band shifted to lower energy. Based on the luminescence excitation spectra of Mn2+, the 3d5 level structure of Mn2+ in ZnS nanoparticles is similar to that in bulk ZnS:Mn, regardless of Mn2+ concentration. Magnetic measurements showed that all the samples exhibit paramagnetic behavior and no antiferromagnetic interaction between Mn2+ ions exists, which are in contrast to bulk ZnS:Mn.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Crystal Growth - Volume 282, Issues 1–2, 15 August 2005, Pages 179-185
نویسندگان
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