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

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Details zur Publikation

Autorinnen und Autoren: Iyi N, Göbbels M
Zeitschrift: Journal of Solid State Chemistry
Jahr der Veröffentlichung: 1996
Band: 122
Seitenbereich: 46-52
ISSN: 0022-4596
Sprache: Englisch


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-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Göbbels, Matthias Prof. Dr.
Lehrstuhl für Mineralogie


Einrichtungen weiterer Autorinnen und Autoren

National Institute for Materials Science


Zitierweisen

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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