کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1295492 | 1498402 | 2006 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electrical conduction properties of rare earth orthophosphates under reducing conditions
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
Electrical conduction properties of Sr-doped PrPO4, NdPO4 and SmPO4 with the monazite structure were investigated at 500–925 °C under H2/H2O reducing conditions. From H/D isotope effects and p(H2)-dependencies of the conductivities, it was found that the materials dominantly conducted protons under the wet reducing conditions although the materials slightly showed n-type electronic conduction at higher temperatures. Based on p(H2O) and p(H2)-dependencies of the conductivities, defect structures of the materials under the reducing conditions were discussed. As a result, it was considered that major positive defects were oxygen deficits at higher temperatures and protons at lower temperatures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 177, Issues 26–32, 31 October 2006, Pages 2369–2373
Journal: Solid State Ionics - Volume 177, Issues 26–32, 31 October 2006, Pages 2369–2373
نویسندگان
Naoto Kitamura, Koji Amezawa, Yoshiharu Uchimoto, Yoichi Tomii, Teiichi Hanada, Naoichi Yamamoto,