کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1295840 | 1498295 | 2013 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Synthesis of novel Ruddlesden–Popper compounds, (Sr1 − xLax)3(Mg1/3 + x/2Nb2/3 − x/2)2O7 (0.15 ≤ x ≤ 0.33) Synthesis of novel Ruddlesden–Popper compounds, (Sr1 − xLax)3(Mg1/3 + x/2Nb2/3 − x/2)2O7 (0.15 ≤ x ≤ 0.33)](/preview/png/1295840.png)
• The double-perovskite Sr2MgMoO6 is a promising SOFC anode material.
• Here we report a related new Ruddlesden–Popper phase (Sr,La)3(Mg,Nb)2O7.
• It forms with the composition, (Sr1 − xLax)3(Mg1/3 + x/2Nb2/3 − x/2)2O7 (0.15 ≤ x ≤ 0.33).
• Structure analysis reveals orthorhombic symmetry and B-site cation ordering.
• The phase is stable under both reducing and oxidising conditions.
We have synthesised a new n = 2 Ruddlesden–Popper (RP) system, (Sr1 − xLax)3(Mg1/3 + x/2Nb2/3 − x/2)2O7 (0.15 ≤ x ≤ 0.33). Crystal structure investigation of the system revealed orthorhombic lattice symmetry and ordering of the B-site cations, Mg and Nb. The new RP compounds were found to be stable in both highly reducing and oxidising conditions at relatively high temperatures (at least up to 1200 °C).
Journal: Solid State Ionics - Volume 244, 1 August 2013, Pages 1–4