同步加速器x射线粉末衍射研究life5o8 - lial5o8尖晶石固溶体的溶解度

Q2 Chemistry

Zeitschrift Fur Kristallographie Pub Date : 2007-11-01 DOI:10.1524/ZKSU.2007.2007.SUPPL_26.471

J. Darul, W. Nowicki, P. Piszora, E. Wolska

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引用次数: 2

摘要

采用同步x射线粉末衍射技术，在室温至900℃范围内研究了同构LiFe5O8和LiAl5O8之间取代固溶体的形成。通过Rietveld结构精细化，获得了LiFe2.5Al2.5O8中A、B尖晶石亚晶格中阳离子的结构表征和分布。我们报道了LiFe5O8-LiAl5O8体系中溶解度极限的新结果。在900℃热处理过程中，“富铁”(LiAl1.2Fe3.8O8)和“富铝”(LiFe1.2Al3.8O8)固溶体共存，未形成单相尖晶石固溶体。

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Synchrotron X-ray powder diffraction studies of solubility limits in the LiFe5O8-LiAl5O8spinel solid solutions

The formation of substitutional solid solutions between the isostructural LiFe5O8 and LiAl5O8 was studied by synchrotron X-ray powder diffraction from room temperature up to 900°C. Structural characterization and distribution of cations in the A and B spinel sublat- tices for LiFe2.5Al2.5O8 were obtained by Rietveld structure refinement. We report new re- sults on the solubility limits in the LiFe5O8-LiAl5O8 system. The "iron-rich" (LiAl1.2Fe3.8O8) and "aluminum-rich" (LiFe1.2Al3.8O8) solid solutions coexisted during the thermal treatment up to 900°C, and the formation of single-phase spinel solid solution was not observed.

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来源期刊

Zeitschrift Fur Kristallographie 物理-晶体学

CiteScore

1.47

自引率

0.00%

发文量

审稿时长

3 months

期刊介绍： Zeitschrift für Kristallographie International journal for structural, physical, and chemical aspects of crystalline materials ISSN 0044-2968 Founded in 1877 by Paul Groth Zeitschrift für Kristallographie is one of the world’s oldest scientific journals. In original papers, letters and review articles it presents results of theoretical or experimental study on crystallography.