Crystal structure of the new magnetoplumbite related compound in the system SrO Al_2_O_3_-MgO

Journal article


Publication Details

Author(s): Iyi N, Göbbels M
Journal: Journal of Solid State Chemistry
Publication year: 1996
Volume: 122
Pages range: 46-52
ISSN: 0022-4596
Language: English


Abstract


A new phase in the system SrO–Al2O3–MgO, which was analyzed by EPMA as Sr2MgAl22O36, was recently found. It is located in the middle of the join connecting strontium hexaaluminate (SrAl12O19) of magnetoplumbite structure and strontium magnesium hexaaluminate (SrMgAl10O17) of β-alumina structure. The crystals were grown by the floating zone method and its crystal structure was analyzed by using the single crystal X-ray was analyzed by using the single crystal X-ray diffraction method. The space group wasPFull-size image (<1 K)m2 with lattice parametersa= 5.583 Å andc= 22.225 Å. The observedc-axis length is intermediate between those of SrAl12O19(c= 22.00 Å) and SrMgAl10O17(c= 22.399 Å). The structure refinement result has shown that it had the alternate stacking of the conduction layers of magnetoplumbite-type (SrAlO3) and β-alumina-type (SrO) separated by a spinel block ((Al, Mg)11O16). This is the first time that such a “mixed-layer” structure of β-alumina and magnetoplumbite is found to exist in the hexaaluminates containing one species of large cation.



FAU Authors / FAU Editors

Göbbels, Matthias Prof. Dr.
Lehrstuhl für Mineralogie


External institutions with authors

National Institute for Materials Science


How to cite

APA:
Iyi, N., & Göbbels, M. (1996). Crystal structure of the new magnetoplumbite related compound in the system SrO Al_2_O_3_-MgO. Journal of Solid State Chemistry, 122, 46-52.

MLA:
Iyi, Nobou, and Matthias Göbbels. "Crystal structure of the new magnetoplumbite related compound in the system SrO Al_2_O_3_-MgO." Journal of Solid State Chemistry 122 (1996): 46-52.

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Last updated on 2018-09-08 at 05:10