کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7211956 | 1469338 | 2018 | 29 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of grain boundary interface on ionic conduction of (Zn1-x,Cox)O
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موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
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چکیده انگلیسی
We investigated the effect of Co atoms, doped into ZnO lattice, on ionic conductivity in the internal grains or through the grain boundaries. Influence of Co amount on the conductivity was associated with enhanced activation energies of the ionic conductivity through the grain boundaries. The change in activation energy implies that the mechanism of ionic conduction through the boundaries can be modified by the Co amount in the lattice. Three conductance mechanisms were identified by the Cole-Cole plots in order to understand the relaxation mechanism and activation energies of ionic transportations. Newly formed activation energy, 395â¯meV, by increasing Co amount up to 10â¯mol% was attributed to the ionic conductivity through the enhanced (or increased) (Zn,Co)O/ZnO) interface at the grain boundaries. In addition, the activation energy was also enhanced by the electronic stability at high temperatures due to decrease in electronic conductivity in the Co-doped ZnO compared to that in undoped ZnO.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Part B: Engineering - Volume 147, 15 August 2018, Pages 252-258
Journal: Composites Part B: Engineering - Volume 147, 15 August 2018, Pages 252-258
نویسندگان
Shalima Shawuti, Musa Mutlu Can, Mehmet Ali Gülgün, Satoru Kaneko, Tamio Endo,