کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1809079 1525181 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Defects induced magnetization in B-doped ZnFeO dilute magnetic semiconductors
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Defects induced magnetization in B-doped ZnFeO dilute magnetic semiconductors
چکیده انگلیسی

Zn0.95−xFe0.05BxO (x=0, 0.05) nano-particles have been synthesized using a modified chemically derived citrate gel method. X-ray diffraction analysis demonstrates the wurtzite type hexagonal structure belonging to P63mc space group without the presence of any secondary phase in both compositions. The Diffraction analysis shows that Fe2+ and B3+ ions have replaced some of the Zn2+ ions while some occupy un-detectable interstitial and inter-granular positions inside the structure. Scanning electron micrographs obtained using scanning electron microscopy show typical smaller size of particles in B-doped composition. Temperature dependent electrical resistivity analysis shows the semiconducting characteristics of the compositions and that doping of Fe and B up to 10 at% does not change the electrical behavior of the host material. Magnetic measurements display room temperature ferromagnetism in both compositions with enhanced magnetization in B-doped composition associated with defect induced magnetic mechanism belonging to intrinsically augmented interstitial and inter-granular effects.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 465, 15 May 2015, Pages 16–20
نویسندگان
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