SOFC负极材料LSGMn-05的晶体和孪晶结构

2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE) Pub Date : 2012-09-01 DOI:10.1109/OMEE.2012.6464775

T. Tataryn, L. Vasylechko, D. Savytskii, M. Berkowski, C. Paulmann, U. Bismayer

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引用次数: 0

摘要

采用高分辨率x射线粉末衍射技术，在298 ~ 1173 K温度范围内研究了钙钛矿型La0.95Sr0.05Ga0.95Mn0.05O3−x晶体的结构。在340 K附近检测到从正交体(Pbnm)到菱形体(r3c)的相变。利用Laue技术，在菱形La0.95Sr0.05Ga0.95Mn0.05O3−x晶体中观察到铁弹性畴结构呈chevronn形。w型畴壁(211)、(101)和(110)的交点形成了锯齿状图案。

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Crystal and twin structure of LSGMn-05 anode material for SOFC

The structure of perovskite-type La0.95Sr0.05Ga0.95Mn0.05O3−x crystals has been investigated using high-resolution X-ray powder diffraction technique in the temperature range of 298–1173 K. A phase transition from orthorhombic (Pbnm) to rhombohedral (R 3 c) has been detected near 340 K. A chevron-like configuration of ferroelastic domain structure was observed in rhombohedral La0.95Sr0.05Ga0.95Mn0.05O3−x crystal using the Laue technique. The chevron-like pattern is formed by the intersection of W-type domain walls (211), (101) and (110).

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2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE)

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