کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1298492 1498413 2005 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Infrared study of high temperature proton conducting Sr(Zr0.95M0.05III)O3 − δ; formation of MIIIO6-cluster depends on dopant species
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Infrared study of high temperature proton conducting Sr(Zr0.95M0.05III)O3 − δ; formation of MIIIO6-cluster depends on dopant species
چکیده انگلیسی

High temperature proton conductors of 5 at.% Ga-, Sc-, In-, Lu-, Y- and Gd-doped SrZrO3, i.e., Sr(Zr0.95MIII0.05)O3 − δ, were prepared and subjected to infrared analysis in the O–H stretching vibration, νOH, region using the diffuse reflection technique. The absorption intensities of the νOH bands at ∼ 3300 cm− 1 (band A) and ∼ 3030 cm− 1 (band B) due to MIII–OH–Zr and the bands at ∼ 2450 cm− 1 (band C) and ∼ 1900 cm− 1 (band D) due to MIII–OH–MIII were discussed in terms of the MIIIO6-cluster formation in Sr(Zr0.95MIII0.05)O3 − δ. The absorption intensity ratio of (IC + ID)/(IA + IB + IC + ID), which corresponds to the population of protons at the MIII–OH–MIII site to the total protons dissolved, increased since the ionic radius of the dopant MIII was different from that of the host Zr. It was shown experimentally that the structural distortion introduced by this MIII doping was the driving force for MIIIO6-cluster formation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 176, Issues 39–40, December 2005, Pages 2941–2944
نویسندگان
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