کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8036274 | 1518059 | 2013 | 30 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Reduction of conductivity and ferromagnetism induced by Ag doping in ZnO:Co
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Cobalt and silver co-doping has been undertaken in ZnO thin films grown by pulsed laser deposition in order to investigate the ferromagnetic properties in ZnO-based diluted magnetic materials and to understand the eventual relation between ferromagnetism and charge carriers. Hall transport measurements reveal that Ag doping up to 5% leads to a progressive compensation of the native n-type carriers. The magnetization curves show ferromagnetic contributions for all samples at both 5Â K and room temperature, decreasing with increasing the Ag concentration. First principles modeling of the possible configurations of Co-Ag defects suggests the formation of nano-clusters around interstitial Co impurity as the origin of the ferromagnetism. The Ag co-doping results in a decrease of the total spin of these clusters and of the Curie temperature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 545, 31 October 2013, Pages 488-495
Journal: Thin Solid Films - Volume 545, 31 October 2013, Pages 488-495
نویسندگان
H. Bieber, S. Colis, G. Schmerber, V. Pierron-Bohnes, D.W. Boukhvalov, E.Z. Kurmaev, L.D. Finkelstein, P. Bazylewski, A. Moewes, G.S. Chang, A. Dinia,