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Synthesis and Characterization of Y Doped BaZrO3 Protonic Conductors under Common and High Pressure
XUE Yan feng, WANG Ye, XU Da peng, LI Li ping, GUO Xing yuan, SU Wen hui,,
J4. 2007, 45 (05):
827-830.
Samples BaZr1-xYxO3(x=0,0.05,0.10,0.15,0.20) were prepared by solid-state reaction method under high-pressure and high-temperature. XRD and Raman measurements show that the products obtained by solid state reaction method at 1 300 ℃ belonged to cubic perovskite structure, but part of high degree diffract peaks split slightly. The samples (x=0,0.05) were in pure cubic perovskite structure under high pressure (3.6 GPa) and temperature (500 ℃), which shows that press can accelerate the reaction. But some BaCO3 and m-ZrO2 appeared in other samples (x≥0.1), which shows that press baffled the reaction. Under 3.6 GPa at1 000 ℃, the peaks of BaO appeared clearly and increased with the content of Y3+. Therefore, to synthesis cubic perovskite structure BaZr1-xYxO3 under high-pressure and high-temperature, the temperature should be below 500 ℃.
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