کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1489237 | 992302 | 2013 | 5 صفحه PDF | دانلود رایگان |

• Effects of Sr doping on electrical properties and structure were investigated.
• The samples have higher conductivity and low activation energy.
• Cause of increase oxygen vacancy concentration in the grain boundary.
The effects of Sr doping on the electrical properties of Ce0.75(Gd0.95−xSrxCa0.05)0.25O2−δ (x = 0, 0.01, 0.02, 0.03, 0.04, 0.05 mol%) electrolytes thick films were investigated. The samples sintered at 1400 °C for 8 h. X-ray diffraction (XRD) showed typical XRD patterns of a cubic fluorite structure, and the ionic conductivity was examined by AC impedance spectroscopy. From the experimental results, it was observed that Ce0.75(Gd0.95−xSrxCa0.05)0.25O2−δ (x = 0.04 mol%) electrolytes thick film have higher conductivity and minimum activation energy at 600 °C. This is explained in terms of the increased in the oxygen vacancy concentration at the grain boundary.
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Journal: Materials Research Bulletin - Volume 48, Issue 12, December 2013, Pages 5008–5012