کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1296928 | 1498379 | 2008 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Defect structure in Bi3Nb1 − xZrxO7 − x/2
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A detailed structural study of selected compositions in the Bi3Nb1 − xZrxO7 − x/2 system using combined X-ray and neutron powder diffraction techniques is presented. Two distinct composition regions are evident. A limited pseudo-cubic solid solution range is observed up to ca. x = 0.4 and details of the defect structure are presented and compared with conductivity data. At higher Zr content, a polyphasic system is observed, with diffraction patterns dominated by a cubic δ-type phase. Evidence suggests that Zr is excluded from this phase and that the phase separation results in a bismuth rich δ-type phase characterised by a significantly larger unit cell parameter as well as high conductivity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 179, Issues 1–6, 31 March 2008, Pages 2–8
Journal: Solid State Ionics - Volume 179, Issues 1–6, 31 March 2008, Pages 2–8
نویسندگان
I. Abrahams, F. Krok, W. Wrobel, A. Kozanecka-Szmigiel, S.C.M. Chan,