کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1519311 | 1511628 | 2006 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Preparation, structure and oxide ion conductivity in Ce6−xYxMoO15−δ (x=0.1–1.4) solid solutions Preparation, structure and oxide ion conductivity in Ce6−xYxMoO15−δ (x=0.1–1.4) solid solutions](/preview/png/1519311.png)
The Ce6−xYxMoO15−δ solid solution with fluorite-related structure have been characterized by differential thermal analysis/thermogravimetry (DTA/TG), X-ray diffraction (XRD), IR, Raman, scanning electric microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) methods. The electric conductivity of samples is investigated by Ac impedance spectroscopy. An essentially pure oxide-ion conductivity of the oxygen-deficiency was observed in pure argon, oxygen and air. The highest oxygen-ion conductivity was found in Ce5.5Y0.5MoO15−δ ranging from 5.9×10−5 (S cm−1) at 300 °C to 1.3×10−2 (S cm−1) at 650 °C, respectively. The oxide-ion conductivities remained stable over 80 h-long test at 800 °C. These properties suggested that significant oxide-ionic conductivity exists in these materials at moderately elevated temperatures.
Journal: Journal of Physics and Chemistry of Solids - Volume 67, Issue 4, April 2006, Pages 732–737